64864925 has 12 divisors (see below), whose sum is σ = 81453120. Its totient is φ = 51233520.

The previous prime is 64864913. The next prime is 64864949. The reversal of 64864925 is 52946846.

It is not a de Polignac number, because 64864925 - 2²⁰ = 63816349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14447 + ... + 18396.

It is an arithmetic number, because the mean of its divisors is an integer number (6787760).

Almost surely, 2^64864925 is an apocalyptic number.

It is an amenable number.

64864925 is a deficient number, since it is larger than the sum of its proper divisors (16588195).

64864925 is a wasteful number, since it uses less digits than its factorization.

64864925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32932 (or 32927 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The square root of 64864925 is about 8053.8763958730. The cubic root of 64864925 is about 401.7938701319.

It can be divided in two parts, 6486 and 4925, that added together give a palindrome (11411).

The spelling of 64864925 in words is "sixty-four million, eight hundred sixty-four thousand, nine hundred twenty-five".