79220925 has 72 divisors (see below), whose sum is σ = 163650240. Its totient is φ = 35884800.

The previous prime is 79220923. The next prime is 79220929. The reversal of 79220925 is 52902297.

It is not a de Polignac number, because 79220925 - 2¹ = 79220923 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79220925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79220923) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 281785 + ... + 282065.

It is an arithmetic number, because the mean of its divisors is an integer number (2272920).

Almost surely, 2^79220925 is an apocalyptic number.

79220925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

79220925 is an abundant number, since it is smaller than the sum of its proper divisors (84429315).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79220925 is a wasteful number, since it uses less digits than its factorization.

79220925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 79220925 is about 8900.6137428831. The cubic root of 79220925 is about 429.4836509873.

The spelling of 79220925 in words is "seventy-nine million, two hundred twenty thousand, nine hundred twenty-five".