22487725 has 12 divisors (see below), whose sum is σ = 30030196. Its totient is φ = 16606080.

The previous prime is 22487687. The next prime is 22487737. The reversal of 22487725 is 52778422.

It can be written as a sum of positive squares in 6 ways, for example, as 1087849 + 21399876 = 1043^2 + 4626^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22487725 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 34272 + ... + 34921.

Almost surely, 2^22487725 is an apocalyptic number.

22487725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22487725 is a deficient number, since it is larger than the sum of its proper divisors (7542471).

22487725 is a wasteful number, since it uses less digits than its factorization.

22487725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69216 (or 69211 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 22487725 is about 4742.1224151217. The cubic root of 22487725 is about 282.2594605821.

The spelling of 22487725 in words is "twenty-two million, four hundred eighty-seven thousand, seven hundred twenty-five".