64725075 has 30 divisors (see below), whose sum is σ = 119896964. Its totient is φ = 34518960.

The previous prime is 64725061. The next prime is 64725079. The reversal of 64725075 is 57052746.

64725075 is a `hidden beast` number, since 647 + 2 + 5 + 0 + 7 + 5 = 666.

It is not a de Polignac number, because 64725075 - 2⁵ = 64725043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64725079) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 13957 + ... + 18006.

Almost surely, 2^64725075 is an apocalyptic number.

64725075 is a deficient number, since it is larger than the sum of its proper divisors (55171889).

64725075 is a wasteful number, since it uses less digits than its factorization.

64725075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31985 (or 31971 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 64725075 is about 8045.1895564990. The cubic root of 64725075 is about 401.5049039763.

The spelling of 64725075 in words is "sixty-four million, seven hundred twenty-five thousand, seventy-five".