256573325022 has 64 divisors (see below), whose sum is σ = 587441756160. Its totient is φ = 73183244544.

The previous prime is 256573324999. The next prime is 256573325023. The reversal of 256573325022 is 220523375652.

It is a super-2 number, since 2×256573325022² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256573325023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100892683 + ... + 100895225.

It is an arithmetic number, because the mean of its divisors is an integer number (9178777440).

Almost surely, 2^256573325022 is an apocalyptic number.

256573325022 is an abundant number, since it is smaller than the sum of its proper divisors (330868431138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256573325022 is a wasteful number, since it uses less digits than its factorization.

256573325022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657.

The product of its (nonzero) digits is 756000, while the sum is 42.

The spelling of 256573325022 in words is "two hundred fifty-six billion, five hundred seventy-three million, three hundred twenty-five thousand, twenty-two".