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253115125 = 5317311383
BaseRepresentation
bin11110001011000…
…11101011110101
3122122021120200021
433011203223311
51004244141000
641041045141
76162304654
oct1705435365
9578246607
10253115125
1111a97115a
12709267b1
1340593583
142588b19b
151734c11a
hexf163af5

253115125 has 32 divisors (see below), whose sum is σ = 336420864. Its totient is φ = 189472000.

The previous prime is 253115117. The next prime is 253115143. The reversal of 253115125 is 521511352.

It is not a de Polignac number, because 253115125 - 23 = 253115117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253115125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660684 + ... + 661066.

It is an arithmetic number, because the mean of its divisors is an integer number (10513152).

Almost surely, 2253115125 is an apocalyptic number.

253115125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

253115125 is a deficient number, since it is larger than the sum of its proper divisors (83305739).

253115125 is a wasteful number, since it uses less digits than its factorization.

253115125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726 (or 716 counting only the distinct ones).

The product of its digits is 1500, while the sum is 25.

The square root of 253115125 is about 15909.5922323610. The cubic root of 253115125 is about 632.5662727977.

Adding to 253115125 its reverse (521511352), we get a palindrome (774626477).

The spelling of 253115125 in words is "two hundred fifty-three million, one hundred fifteen thousand, one hundred twenty-five".

Divisors: 1 5 17 25 85 125 311 383 425 1555 1915 2125 5287 6511 7775 9575 26435 32555 38875 47875 119113 132175 162775 595565 660875 813875 2024921 2977825 10124605 14889125 50623025 253115125