79530725 has 6 divisors (see below), whose sum is σ = 98618130. Its totient is φ = 63624560.

The previous prime is 79530701. The next prime is 79530727. The reversal of 79530725 is 52703597.

It is a Cunningham number, because it is equal to 8918²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 79530724 = 1^2 + 8918^2 .

It is not a de Polignac number, because 79530725 - 2¹⁶ = 79465189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79530727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1590590 + ... + 1590639.

It is an arithmetic number, because the mean of its divisors is an integer number (16436355).

Almost surely, 2^79530725 is an apocalyptic number.

It is an amenable number.

79530725 is a deficient number, since it is larger than the sum of its proper divisors (19087405).

79530725 is a wasteful number, since it uses less digits than its factorization.

79530725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181239 (or 3181234 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 79530725 is about 8918.0000560664. Note that the first 4 decimals coincide. The cubic root of 79530725 is about 430.0427666135.

The spelling of 79530725 in words is "seventy-nine million, five hundred thirty thousand, seven hundred twenty-five".