22609925 has 24 divisors (see below), whose sum is σ = 30638664. Its totient is φ = 16450560.

The previous prime is 22609919. The next prime is 22609933. The reversal of 22609925 is 52990622.

22609925 = 920² + 921² + ... + 945².

It can be written as a sum of positive squares in 12 ways, for example, as 10233601 + 12376324 = 3199^2 + 3518^2 .

It is not a de Polignac number, because 22609925 - 2⁶ = 22609861 is a prime.

It is a super-2 number, since 2×22609925² = 1022417417011250, which contains 22 as substring.

It is a Duffinian number.

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 (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23249 + ... + 24201.

It is an arithmetic number, because the mean of its divisors is an integer number (1276611).

Almost surely, 2^22609925 is an apocalyptic number.

22609925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22609925 is a deficient number, since it is larger than the sum of its proper divisors (8028739).

22609925 is a wasteful number, since it uses less digits than its factorization.

22609925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 22609925 is about 4754.9894847413. The cubic root of 22609925 is about 282.7698103610.

The spelling of 22609925 in words is "twenty-two million, six hundred nine thousand, nine hundred twenty-five".