22709725 has 12 divisors (see below), whose sum is σ = 28241620. Its totient is φ = 18115200.

The previous prime is 22709707. The next prime is 22709741. The reversal of 22709725 is 52790722.

It can be written as a sum of positive squares in 6 ways, for example, as 835396 + 21874329 = 914^2 + 4677^2 .

It is not a de Polignac number, because 22709725 - 2⁷ = 22709597 is a prime.

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, 9115 + ... + 11335.

Almost surely, 2^22709725 is an apocalyptic number.

22709725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22709725 is a deficient number, since it is larger than the sum of its proper divisors (5531895).

22709725 is a wasteful number, since it uses less digits than its factorization.

22709725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2635 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 22709725 is about 4765.4721696806. The cubic root of 22709725 is about 283.1852474906.

The spelling of 22709725 in words is "twenty-two million, seven hundred nine thousand, seven hundred twenty-five".