64741625 has 16 divisors (see below), whose sum is σ = 87014928. Its totient is φ = 47808000.

The previous prime is 64741603. The next prime is 64741637. The reversal of 64741625 is 52614746.

It can be written as a sum of positive squares in 8 ways, for example, as 40347904 + 24393721 = 6352^2 + 4939^2 .

It is not a de Polignac number, because 64741625 - 2⁶ = 64741561 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18296 + ... + 21545.

It is an arithmetic number, because the mean of its divisors is an integer number (5438433).

Almost surely, 2^64741625 is an apocalyptic number.

64741625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64741625 is a deficient number, since it is larger than the sum of its proper divisors (22273303).

64741625 is a wasteful number, since it uses less digits than its factorization.

64741625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39869 (or 39859 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 64741625 is about 8046.2180557079. The cubic root of 64741625 is about 401.5391222442.

The spelling of 64741625 in words is "sixty-four million, seven hundred forty-one thousand, six hundred twenty-five".