79941625 has 8 divisors (see below), whose sum is σ = 99767304. Its totient is φ = 63953200.

The previous prime is 79941623. The next prime is 79941671. The reversal of 79941625 is 52614997.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 144 + 79941481 = 12^2 + 8941^2 .

It is not a de Polignac number, because 79941625 - 2¹ = 79941623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79941623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319642 + ... + 319891.

It is an arithmetic number, because the mean of its divisors is an integer number (12470913).

Almost surely, 2^79941625 is an apocalyptic number.

It is an amenable number.

79941625 is a deficient number, since it is larger than the sum of its proper divisors (19825679).

79941625 is an equidigital number, since it uses as much as digits as its factorization.

79941625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639548 (or 639538 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 79941625 is about 8941.0080527869. The cubic root of 79941625 is about 430.7821082337.

It can be divided in two parts, 799 and 41625, that added together give a palindrome (42424).

The spelling of 79941625 in words is "seventy-nine million, nine hundred forty-one thousand, six hundred twenty-five".