22153925 has 12 divisors (see below), whose sum is σ = 27592356. Its totient is φ = 17644800.

The previous prime is 22153921. The next prime is 22153931. The reversal of 22153925 is 52935122.

It can be written as a sum of positive squares in 6 ways, for example, as 494209 + 21659716 = 703^2 + 4654^2 .

It is not a de Polignac number, because 22153925 - 2² = 22153921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22153921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4187 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (2299363).

Almost surely, 2^22153925 is an apocalyptic number.

22153925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22153925 is a deficient number, since it is larger than the sum of its proper divisors (5438431).

22153925 is a wasteful number, since it uses less digits than its factorization.

22153925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3928 (or 3923 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 22153925 is about 4706.7956191022. The cubic root of 22153925 is about 280.8559056565.

The spelling of 22153925 in words is "twenty-two million, one hundred fifty-three thousand, nine hundred twenty-five".