256375725 has 48 divisors (see below), whose sum is σ = 451256832. Its totient is φ = 127989760.

The previous prime is 256375699. The next prime is 256375729. The reversal of 256375725 is 527573652.

It is a happy number.

It is not a de Polignac number, because 256375725 - 2⁷ = 256375597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256375729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296644 + ... + 297506.

It is an arithmetic number, because the mean of its divisors is an integer number (9401184).

Almost surely, 2^256375725 is an apocalyptic number.

256375725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256375725 is a deficient number, since it is larger than the sum of its proper divisors (194881107).

256375725 is a wasteful number, since it uses less digits than its factorization.

256375725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1121 counting only the distinct ones).

The product of its digits is 441000, while the sum is 42.

The square root of 256375725 is about 16011.7371012642. The cubic root of 256375725 is about 635.2709076160.

The spelling of 256375725 in words is "two hundred fifty-six million, three hundred seventy-five thousand, seven hundred twenty-five".