22699225 has 6 divisors (see below), whose sum is σ = 28147070. Its totient is φ = 18159360.

The previous prime is 22699213. The next prime is 22699249. The reversal of 22699225 is 52299622.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2096704 + 20602521 = 1448^2 + 4539^2 .

It is not a de Polignac number, because 22699225 - 2⁹ = 22698713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453960 + ... + 454009.

Almost surely, 2^22699225 is an apocalyptic number.

22699225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22699225 is a deficient number, since it is larger than the sum of its proper divisors (5447845).

22699225 is an equidigital number, since it uses as much as digits as its factorization.

22699225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907979 (or 907974 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 22699225 is about 4764.3703676352. The cubic root of 22699225 is about 283.1415965366.

The spelling of 22699225 in words is "twenty-two million, six hundred ninety-nine thousand, two hundred twenty-five".