255425520 has 80 divisors (see below), whose sum is σ = 904942080. Its totient is φ = 58382592.

The previous prime is 255425519. The next prime is 255425563. The reversal of 255425520 is 25524552.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74340 + ... + 77699.

It is an arithmetic number, because the mean of its divisors is an integer number (11311776).

Almost surely, 2^255425520 is an apocalyptic number.

255425520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255425520 is an abundant number, since it is smaller than the sum of its proper divisors (649516560).

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

255425520 is a wasteful number, since it uses less digits than its factorization.

255425520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152062 (or 152056 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 255425520 is about 15982.0374170504. The cubic root of 255425520 is about 634.4851014379.

The spelling of 255425520 in words is "two hundred fifty-five million, four hundred twenty-five thousand, five hundred twenty".