22529725 has 12 divisors (see below), whose sum is σ = 29407840. Its totient is φ = 17074800.

The previous prime is 22529701. The next prime is 22529729. The reversal of 22529725 is 52792522.

It is not a de Polignac number, because 22529725 - 2⁵ = 22529693 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22529729) 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, 23241 + ... + 24190.

Almost surely, 2^22529725 is an apocalyptic number.

22529725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22529725 is a deficient number, since it is larger than the sum of its proper divisors (6878115).

22529725 is a wasteful number, since it uses less digits than its factorization.

22529725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47460 (or 47455 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 22529725 is about 4746.5487461944. The cubic root of 22529725 is about 282.4350752724.

The spelling of 22529725 in words is "twenty-two million, five hundred twenty-nine thousand, seven hundred twenty-five".