22479725 has 6 divisors (see below), whose sum is σ = 27874890. Its totient is φ = 17983760.

The previous prime is 22479713. The next prime is 22479733. The reversal of 22479725 is 52797422.

It can be written as a sum of positive squares in 3 ways, for example, as 4721929 + 17757796 = 2173^2 + 4214^2 .

It is not a de Polignac number, because 22479725 - 2²⁰ = 21431149 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 449570 + ... + 449619.

It is an arithmetic number, because the mean of its divisors is an integer number (4645815).

Almost surely, 2^22479725 is an apocalyptic number.

22479725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22479725 is a deficient number, since it is larger than the sum of its proper divisors (5395165).

22479725 is an equidigital number, since it uses as much as digits as its factorization.

22479725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899199 (or 899194 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 22479725 is about 4741.2788359260. The cubic root of 22479725 is about 282.2259853786.

The spelling of 22479725 in words is "twenty-two million, four hundred seventy-nine thousand, seven hundred twenty-five".