64317725 has 24 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 49712000.

The previous prime is 64317713. The next prime is 64317731. The reversal of 64317725 is 52771346.

It is not a de Polignac number, because 64317725 - 2⁶ = 64317661 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 134036 + ... + 134514.

It is an arithmetic number, because the mean of its divisors is an integer number (3437280).

Almost surely, 2^64317725 is an apocalyptic number.

It is an amenable number.

64317725 is a deficient number, since it is larger than the sum of its proper divisors (18176995).

64317725 is a wasteful number, since it uses less digits than its factorization.

64317725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 656 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 64317725 is about 8019.8332276925. The cubic root of 64317725 is about 400.6608347258.

The spelling of 64317725 in words is "sixty-four million, three hundred seventeen thousand, seven hundred twenty-five".