64402525 has 12 divisors (see below), whose sum is σ = 87119424. Its totient is φ = 46838000.

The previous prime is 64402517. The next prime is 64402529. The reversal of 64402525 is 52520446.

It is not a de Polignac number, because 64402525 - 2³ = 64402517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64402493 and 64402502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64402529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116821 + ... + 117370.

It is an arithmetic number, because the mean of its divisors is an integer number (7259952).

Almost surely, 2^64402525 is an apocalyptic number.

It is an amenable number.

64402525 is a deficient number, since it is larger than the sum of its proper divisors (22716899).

64402525 is a wasteful number, since it uses less digits than its factorization.

64402525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234212 (or 234207 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 64402525 is about 8025.1183791892. The cubic root of 64402525 is about 400.8368417687.

The spelling of 64402525 in words is "sixty-four million, four hundred two thousand, five hundred twenty-five".