64258725 has 48 divisors (see below), whose sum is σ = 113832000. Its totient is φ = 31872000.

The previous prime is 64258723. The next prime is 64258739. The reversal of 64258725 is 52785246.

It is not a de Polignac number, because 64258725 - 2¹ = 64258723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64258721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128526 + ... + 129024.

It is an arithmetic number, because the mean of its divisors is an integer number (2371500).

Almost surely, 2^64258725 is an apocalyptic number.

It is an amenable number.

64258725 is a deficient number, since it is larger than the sum of its proper divisors (49573275).

64258725 is a wasteful number, since it uses less digits than its factorization.

64258725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 625 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 64258725 is about 8016.1540030117. The cubic root of 64258725 is about 400.5382857130.

The spelling of 64258725 in words is "sixty-four million, two hundred fifty-eight thousand, seven hundred twenty-five".