561554002525 has 24 divisors (see below), whose sum is σ = 706764478464. Its totient is φ = 442559395200.

The previous prime is 561554002507. The next prime is 561554002531. The reversal of 561554002525 is 525200455165.

561554002525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561554002525 - 2⁷ = 561554002397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177117 + ... + 1074466.

It is an arithmetic number, because the mean of its divisors is an integer number (29448519936).

Almost surely, 2^561554002525 is an apocalyptic number.

It is an amenable number.

561554002525 is a deficient number, since it is larger than the sum of its proper divisors (145210475939).

561554002525 is a wasteful number, since it uses less digits than its factorization.

561554002525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251861 (or 1251856 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 40.

The spelling of 561554002525 in words is "five hundred sixty-one billion, five hundred fifty-four million, two thousand, five hundred twenty-five".