79578125 has 28 divisors (see below), whose sum is σ = 108748608. Its totient is φ = 57750000.

The previous prime is 79578113. The next prime is 79578127. The reversal of 79578125 is 52187597.

It is not a de Polignac number, because 79578125 - 2¹⁰ = 79577101 is a prime.

It is a Duffinian number.

Its product of digits (176400) is a multiple of the sum of its prime factors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79578127) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 171644 + ... + 172106.

Almost surely, 2^79578125 is an apocalyptic number.

It is an amenable number.

79578125 is a deficient number, since it is larger than the sum of its proper divisors (29170483).

79578125 is an frugal number, since it uses more digits than its factorization.

79578125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 479 counting only the distinct ones).

The product of its digits is 176400, while the sum is 44.

The square root of 79578125 is about 8920.6572067309. The cubic root of 79578125 is about 430.1281842467.

The spelling of 79578125 in words is "seventy-nine million, five hundred seventy-eight thousand, one hundred twenty-five".