64895725 has 12 divisors (see below), whose sum is σ = 80596404. Its totient is φ = 51835520.

The previous prime is 64895717. The next prime is 64895737. The reversal of 64895725 is 52759846.

It can be written as a sum of positive squares in 6 ways, for example, as 157609 + 64738116 = 397^2 + 8046^2 .

It is not a de Polignac number, because 64895725 - 2³ = 64895717 is a prime.

It is a super-2 number, since 2×64895725² = 8422910246551250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18297 + ... + 21553.

It is an arithmetic number, because the mean of its divisors is an integer number (6716367).

Almost surely, 2^64895725 is an apocalyptic number.

It is an amenable number.

64895725 is a deficient number, since it is larger than the sum of its proper divisors (15700679).

64895725 is a wasteful number, since it uses less digits than its factorization.

64895725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064 (or 4059 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 64895725 is about 8055.7882916571. The cubic root of 64895725 is about 401.8574550508.

The spelling of 64895725 in words is "sixty-four million, eight hundred ninety-five thousand, seven hundred twenty-five".