655260625520 has 40 divisors (see below), whose sum is σ = 1524468591456. Its totient is φ = 261934334208.

The previous prime is 655260625511. The next prime is 655260625553. The reversal of 655260625520 is 25526062556.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2530727 + ... + 2777606.

Almost surely, 2^655260625520 is an apocalyptic number.

It is an amenable number.

655260625520 is an abundant number, since it is smaller than the sum of its proper divisors (869207965936).

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

655260625520 is a wasteful number, since it uses less digits than its factorization.

655260625520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5309889 (or 5309883 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 655260625520 in words is "six hundred fifty-five billion, two hundred sixty million, six hundred twenty-five thousand, five hundred twenty".