256024725 has 24 divisors (see below), whose sum is σ = 461776992. Its totient is φ = 124132800.

The previous prime is 256024721. The next prime is 256024771. The reversal of 256024725 is 527420652.

It is not a de Polignac number, because 256024725 - 2² = 256024721 is a prime.

It is a super-2 number, since 2×256024725² = 131097319622651250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256024721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154342 + ... + 155991.

It is an arithmetic number, because the mean of its divisors is an integer number (19240708).

Almost surely, 2^256024725 is an apocalyptic number.

256024725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256024725 is a deficient number, since it is larger than the sum of its proper divisors (205752267).

256024725 is a wasteful number, since it uses less digits than its factorization.

256024725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310357 (or 310352 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 256024725 is about 16000.7726375947. The cubic root of 256024725 is about 634.9808620516.

The spelling of 256024725 in words is "two hundred fifty-six million, twenty-four thousand, seven hundred twenty-five".