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2815125 = 3537507
BaseRepresentation
bin1010101111010010010101
312022000121220
422233102111
51210041000
6140200553
732633235
oct12572225
95260556
102815125
111653055
12b39159
13777471
14533cc5
153a91a0
hex2af495

2815125 has 16 divisors (see below), whose sum is σ = 4684992. Its totient is φ = 1501200.

The previous prime is 2815123. The next prime is 2815129. The reversal of 2815125 is 5215182.

It is not a de Polignac number, because 2815125 - 21 = 2815123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2815095 and 2815104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2815123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3379 + ... + 4128.

It is an arithmetic number, because the mean of its divisors is an integer number (292812).

22815125 is an apocalyptic number.

2815125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2815125 is a deficient number, since it is larger than the sum of its proper divisors (1869867).

2815125 is an equidigital number, since it uses as much as digits as its factorization.

2815125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7525 (or 7515 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 2815125 is about 1677.8334243899. The cubic root of 2815125 is about 141.1993056915.

The spelling of 2815125 in words is "two million, eight hundred fifteen thousand, one hundred twenty-five".

Divisors: 1 3 5 15 25 75 125 375 7507 22521 37535 112605 187675 563025 938375 2815125