22304525 has 12 divisors (see below), whose sum is σ = 28406292. Its totient is φ = 17360640.

The previous prime is 22304483. The next prime is 22304551. The reversal of 22304525 is 52540322.

It can be written as a sum of positive squares in 6 ways, for example, as 644809 + 21659716 = 803^2 + 4654^2 .

It is not a de Polignac number, because 22304525 - 2²² = 18110221 is a prime.

It is a Duffinian number.

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 22304525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11132 + ... + 12981.

It is an arithmetic number, because the mean of its divisors is an integer number (2367191).

Almost surely, 2^22304525 is an apocalyptic number.

22304525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22304525 is a deficient number, since it is larger than the sum of its proper divisors (6101767).

22304525 is a wasteful number, since it uses less digits than its factorization.

22304525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24160 (or 24155 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 22304525 is about 4722.7666679606. The cubic root of 22304525 is about 281.4908784129.

Adding to 22304525 its reverse (52540322), we get a palindrome (74844847).

The spelling of 22304525 in words is "twenty-two million, three hundred four thousand, five hundred twenty-five".