256710025 has 24 divisors (see below), whose sum is σ = 373976064. Its totient is φ = 172334400.

The previous prime is 256710019. The next prime is 256710037. The reversal of 256710025 is 520017652.

256710025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256710025 - 2³ = 256710017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256709975 and 256710002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32329 + ... + 39478.

It is an arithmetic number, because the mean of its divisors is an integer number (15582336).

Almost surely, 2^256710025 is an apocalyptic number.

256710025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256710025 is a deficient number, since it is larger than the sum of its proper divisors (117266039).

256710025 is a wasteful number, since it uses less digits than its factorization.

256710025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71841 (or 71836 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 256710025 is about 16022.1729175540. The cubic root of 256710025 is about 635.5469072574.

Adding to 256710025 its reverse (520017652), we get a palindrome (776727677).

The spelling of 256710025 in words is "two hundred fifty-six million, seven hundred ten thousand, twenty-five".