64223125 has 20 divisors (see below), whose sum is σ = 80799136. Its totient is φ = 51030000.

The previous prime is 64223113. The next prime is 64223147. The reversal of 64223125 is 52132246.

It is not a de Polignac number, because 64223125 - 2¹¹ = 64221077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64223125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 131632 + ... + 132118.

Almost surely, 2^64223125 is an apocalyptic number.

It is an amenable number.

64223125 is a deficient number, since it is larger than the sum of its proper divisors (16576011).

64223125 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (64223124) it forms an eRAP, since the sums of their prime factors are consecutive (717 and 718).

64223125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 703 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 64223125 is about 8013.9331791574. The cubic root of 64223125 is about 400.4643045946.

The spelling of 64223125 in words is "sixty-four million, two hundred twenty-three thousand, one hundred twenty-five".