79780125 has 32 divisors (see below), whose sum is σ = 134484480. Its totient is φ = 41995200.

The previous prime is 79780117. The next prime is 79780139. The reversal of 79780125 is 52108797.

It is not a de Polignac number, because 79780125 - 2³ = 79780117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28279 + ... + 30971.

It is an arithmetic number, because the mean of its divisors is an integer number (4202640).

Almost surely, 2^79780125 is an apocalyptic number.

79780125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79780125 is a deficient number, since it is larger than the sum of its proper divisors (54704355).

79780125 is a wasteful number, since it uses less digits than its factorization.

79780125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790 (or 2780 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 79780125 is about 8931.9720666827. The cubic root of 79780125 is about 430.4918205269.

It can be divided in two parts, 79 and 780125, that multiplied together give a cube (61629875 = 395³).

The spelling of 79780125 in words is "seventy-nine million, seven hundred eighty thousand, one hundred twenty-five".