64526402625 has 16 divisors (see below), whose sum is σ = 107371934592. Its totient is φ = 34414081200.

The previous prime is 64526402621. The next prime is 64526402651. The reversal of 64526402625 is 52620462546.

It is not a de Polignac number, because 64526402625 - 2² = 64526402621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64526402621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86034829 + ... + 86035578.

It is an arithmetic number, because the mean of its divisors is an integer number (6710745912).

Almost surely, 2^64526402625 is an apocalyptic number.

It is an amenable number.

64526402625 is a deficient number, since it is larger than the sum of its proper divisors (42845531967).

64526402625 is a wasteful number, since it uses less digits than its factorization.

64526402625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172070425 (or 172070415 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 64526402625 in words is "sixty-four billion, five hundred twenty-six million, four hundred two thousand, six hundred twenty-five".