79868925 has 18 divisors (see below), whose sum is σ = 143054522. Its totient is φ = 42596640.

The previous prime is 79868923. The next prime is 79868963. The reversal of 79868925 is 52986897.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16475481 + 63393444 = 4059^2 + 7962^2 .

It is not a de Polignac number, because 79868925 - 2¹ = 79868923 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 (79868923) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 177262 + ... + 177711.

Almost surely, 2^79868925 is an apocalyptic number.

79868925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79868925 is a deficient number, since it is larger than the sum of its proper divisors (63185597).

79868925 is a wasteful number, since it uses less digits than its factorization.

79868925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354989 (or 354981 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 79868925 is about 8936.9415909471. The cubic root of 79868925 is about 430.6514822605.

It can be divided in two parts, 7986892 and 5, that added together give a palindrome (7986897).

The spelling of 79868925 in words is "seventy-nine million, eight hundred sixty-eight thousand, nine hundred twenty-five".