64409125 has 32 divisors (see below), whose sum is σ = 88583040. Its totient is φ = 46368000.

The previous prime is 64409117. The next prime is 64409143. The reversal of 64409125 is 52190446.

It is not a de Polignac number, because 64409125 - 2³ = 64409117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190957 + ... + 191293.

It is an arithmetic number, because the mean of its divisors is an integer number (2768220).

Almost surely, 2^64409125 is an apocalyptic number.

It is an amenable number.

64409125 is a deficient number, since it is larger than the sum of its proper divisors (24173915).

64409125 is a wasteful number, since it uses less digits than its factorization.

64409125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 64409125 is about 8025.5295775419. The cubic root of 64409125 is about 400.8505339482.

The spelling of 64409125 in words is "sixty-four million, four hundred nine thousand, one hundred twenty-five".