652120625556 has 18 divisors (see below), whose sum is σ = 1648416025802. Its totient is φ = 217373541840.

The previous prime is 652120625543. The next prime is 652120625561. The reversal of 652120625556 is 655526021256.

652120625556 is a `hidden beast` number, since 6 + 5 + 2 + 12 + 0 + 625 + 5 + 5 + 6 = 666.

652120625556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 564427648656 + 87692976900 = 751284^2 + 296130^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×652120625556² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9057230875 + ... + 9057230946.

Almost surely, 2^652120625556 is an apocalyptic number.

It is an amenable number.

652120625556 is an abundant number, since it is smaller than the sum of its proper divisors (996295400246).

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

652120625556 is a wasteful number, since it uses less digits than its factorization.

652120625556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114461831 (or 18114461826 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 652120625556 in words is "six hundred fifty-two billion, one hundred twenty million, six hundred twenty-five thousand, five hundred fifty-six".