22697525 has 12 divisors (see below), whose sum is σ = 28532772. Its totient is φ = 17907840.

The previous prime is 22697513. The next prime is 22697531. The reversal of 22697525 is 52579622.

It can be written as a sum of positive squares in 6 ways, for example, as 3530641 + 19166884 = 1879^2 + 4378^2 .

It is not a de Polignac number, because 22697525 - 2⁶ = 22697461 is a prime.

It is a super-2 number, since 2×22697525² = 1030355282251250, which contains 22 as substring.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 4394 + ... + 8043.

It is an arithmetic number, because the mean of its divisors is an integer number (2377731).

Almost surely, 2^22697525 is an apocalyptic number.

22697525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22697525 is a deficient number, since it is larger than the sum of its proper divisors (5835247).

22697525 is a wasteful number, since it uses less digits than its factorization.

22697525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520 (or 12515 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 22697525 is about 4764.1919566701. The cubic root of 22697525 is about 283.1345279733.

The spelling of 22697525 in words is "twenty-two million, six hundred ninety-seven thousand, five hundred twenty-five".