79680225 has 24 divisors (see below), whose sum is σ = 132982560. Its totient is φ = 42094720.

The previous prime is 79680217. The next prime is 79680229. The reversal of 79680225 is 52208697.

It is a happy number.

It is not a de Polignac number, because 79680225 - 2³ = 79680217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79680229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3061 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (5540940).

Almost surely, 2^79680225 is an apocalyptic number.

79680225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79680225 is a deficient number, since it is larger than the sum of its proper divisors (53302335).

79680225 is a wasteful number, since it uses less digits than its factorization.

79680225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10049 (or 10044 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 79680225 is about 8926.3780448735. The cubic root of 79680225 is about 430.3120593979.

The spelling of 79680225 in words is "seventy-nine million, six hundred eighty thousand, two hundred twenty-five".