79729125 has 48 divisors (see below), whose sum is σ = 154365120. Its totient is φ = 36439200.

The previous prime is 79729121. The next prime is 79729127. The reversal of 79729125 is 52192797.

It is not a de Polignac number, because 79729125 - 2² = 79729121 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79729121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16206 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (3215940).

Almost surely, 2^79729125 is an apocalyptic number.

79729125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79729125 is a deficient number, since it is larger than the sum of its proper divisors (74635995).

79729125 is a wasteful number, since it uses less digits than its factorization.

79729125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4354 counting only the distinct ones).

The product of its digits is 79380, while the sum is 42.

The square root of 79729125 is about 8929.1166976359. The cubic root of 79729125 is about 430.4000693427.

The spelling of 79729125 in words is "seventy-nine million, seven hundred twenty-nine thousand, one hundred twenty-five".