64442125 has 16 divisors (see below), whose sum is σ = 87736896. Its totient is φ = 46866000.

The previous prime is 64442107. The next prime is 64442171. The reversal of 64442125 is 52124446.

It is not a de Polignac number, because 64442125 - 2⁷ = 64441997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64442093 and 64442102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22059 + ... + 24808.

It is an arithmetic number, because the mean of its divisors is an integer number (5483556).

Almost surely, 2^64442125 is an apocalyptic number.

It is an amenable number.

64442125 is a deficient number, since it is larger than the sum of its proper divisors (23294771).

64442125 is a wasteful number, since it uses less digits than its factorization.

64442125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46893 (or 46883 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 64442125 is about 8027.5852533623. The cubic root of 64442125 is about 400.9189808188.

It can be divided in two parts, 644421 and 25, that added together give a palindrome (644446).

The spelling of 64442125 in words is "sixty-four million, four hundred forty-two thousand, one hundred twenty-five".