79709025 has 48 divisors (see below), whose sum is σ = 145704960. Its totient is φ = 38126400.

The previous prime is 79709017. The next prime is 79709027. The reversal of 79709025 is 52090797.

It is not a de Polignac number, because 79709025 - 2³ = 79709017 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (79709027) 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, 64564 + ... + 65786.

It is an arithmetic number, because the mean of its divisors is an integer number (3035520).

Almost surely, 2^79709025 is an apocalyptic number.

79709025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79709025 is a deficient number, since it is larger than the sum of its proper divisors (65995935).

79709025 is a wasteful number, since it uses less digits than its factorization.

79709025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 79709025 is about 8927.9910954257. The cubic root of 79709025 is about 430.3638978329.

The spelling of 79709025 in words is "seventy-nine million, seven hundred nine thousand, twenty-five".