255057406557 has 32 divisors (see below), whose sum is σ = 366001459200. Its totient is φ = 157608475200.

The previous prime is 255057406553. The next prime is 255057406609. The reversal of 255057406557 is 755604750552.

It is not a de Polignac number, because 255057406557 - 2² = 255057406553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255057406553) 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, 61807 + ... + 716892.

It is an arithmetic number, because the mean of its divisors is an integer number (11437545600).

Almost surely, 2^255057406557 is an apocalyptic number.

It is an amenable number.

255057406557 is a deficient number, since it is larger than the sum of its proper divisors (110944052643).

255057406557 is a wasteful number, since it uses less digits than its factorization.

255057406557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778873.

The product of its (nonzero) digits is 7350000, while the sum is 51.

The spelling of 255057406557 in words is "two hundred fifty-five billion, fifty-seven million, four hundred six thousand, five hundred fifty-seven".