256316142525 has 24 divisors (see below), whose sum is σ = 427010970144. Its totient is φ = 135658411200.

The previous prime is 256316142493. The next prime is 256316142547. The reversal of 256316142525 is 525241613652.

It is not a de Polignac number, because 256316142525 - 2⁵ = 256316142493 is a prime.

It is a super-2 number, since 2×256316142525² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 13034254 + ... + 13053903.

It is an arithmetic number, because the mean of its divisors is an integer number (17792123756).

Almost surely, 2^256316142525 is an apocalyptic number.

256316142525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

256316142525 is a deficient number, since it is larger than the sum of its proper divisors (170694827619).

256316142525 is a wasteful number, since it uses less digits than its factorization.

256316142525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26088301 (or 26088296 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The spelling of 256316142525 in words is "two hundred fifty-six billion, three hundred sixteen million, one hundred forty-two thousand, five hundred twenty-five".