22090625 has 12 divisors (see below), whose sum is σ = 27615420. Its totient is φ = 17670000.

The previous prime is 22090589. The next prime is 22090639. The reversal of 22090625 is 52609022.

It can be written as a sum of positive squares in 6 ways, for example, as 19430464 + 2660161 = 4408^2 + 1631^2 .

It is not a de Polignac number, because 22090625 - 2⁶ = 22090561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22090594 and 22090603.

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, 410 + ... + 6659.

It is an arithmetic number, because the mean of its divisors is an integer number (2301285).

Almost surely, 2^22090625 is an apocalyptic number.

22090625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22090625 is a deficient number, since it is larger than the sum of its proper divisors (5524795).

22090625 is an frugal number, since it uses more digits than its factorization.

22090625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094 (or 7074 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22090625 is about 4700.0664888914. The cubic root of 22090625 is about 280.5881556878.

Adding to 22090625 its reverse (52609022), we get a palindrome (74699647).

The spelling of 22090625 in words is "twenty-two million, ninety thousand, six hundred twenty-five".