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25253153 = 31380681
BaseRepresentation
bin110000001010…
…1010100100001
31202111222210222
41200111110201
522431100103
62301132425
7424435232
oct140252441
952458728
1025253153
1113289082
12855a115
1353024c3
1434d5089
15233c638
hex1815521

25253153 has 4 divisors (see below), whose sum is σ = 25334148. Its totient is φ = 25172160.

The previous prime is 25253117. The next prime is 25253159. The reversal of 25253153 is 35135252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13191424 + 12061729 = 3632^2 + 3473^2 .

It is a cyclic number.

It is not a de Polignac number, because 25253153 - 28 = 25252897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25253159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40028 + ... + 40653.

It is an arithmetic number, because the mean of its divisors is an integer number (6333537).

Almost surely, 225253153 is an apocalyptic number.

It is an amenable number.

25253153 is a deficient number, since it is larger than the sum of its proper divisors (80995).

25253153 is an equidigital number, since it uses as much as digits as its factorization.

25253153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80994.

The product of its digits is 4500, while the sum is 26.

The square root of 25253153 is about 5025.2515359930. The cubic root of 25253153 is about 293.3854262109.

The spelling of 25253153 in words is "twenty-five million, two hundred fifty-three thousand, one hundred fifty-three".

Divisors: 1 313 80681 25253153