256562524525461 has 128 divisors (see below), whose sum is σ = 443846169133056. Its totient is φ = 127964995841280.

The previous prime is 256562524525459. The next prime is 256562524525597. The reversal of 256562524525461 is 164525425265652.

It is not a de Polignac number, because 256562524525461 - 2¹ = 256562524525459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256562524525395 and 256562524525404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256562524525451) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4964131126 + ... + 4964182808.

It is an arithmetic number, because the mean of its divisors is an integer number (3467548196352).

Almost surely, 2^{256562524525461} is an apocalyptic number.

256562524525461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

256562524525461 is a deficient number, since it is larger than the sum of its proper divisors (187283644607595).

256562524525461 is a wasteful number, since it uses less digits than its factorization.

256562524525461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60431.

The product of its digits is 172800000, while the sum is 60.

The spelling of 256562524525461 in words is "two hundred fifty-six trillion, five hundred sixty-two billion, five hundred twenty-four million, five hundred twenty-five thousand, four hundred sixty-one".