64731425 has 24 divisors (see below), whose sum is σ = 87931872. Its totient is φ = 46880000.

The previous prime is 64731413. The next prime is 64731449. The reversal of 64731425 is 52413746.

It is not a de Polignac number, because 64731425 - 2⁴ = 64731409 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64731391 and 64731400.

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, 109982 + ... + 110568.

It is an arithmetic number, because the mean of its divisors is an integer number (3663828).

Almost surely, 2^64731425 is an apocalyptic number.

It is an amenable number.

64731425 is a deficient number, since it is larger than the sum of its proper divisors (23200447).

64731425 is a wasteful number, since it uses less digits than its factorization.

64731425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1004 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 64731425 is about 8045.5841925866. The cubic root of 64731425 is about 401.5180337294.

It can be divided in two parts, 64731 and 425, that added together give a palindrome (65156).

The spelling of 64731425 in words is "sixty-four million, seven hundred thirty-one thousand, four hundred twenty-five".