22357225 has 12 divisors (see below), whose sum is σ = 30243600. Its totient is φ = 16259600.

The previous prime is 22357217. The next prime is 22357241. The reversal of 22357225 is 52275322.

It is not a de Polignac number, because 22357225 - 2³ = 22357217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22357193 and 22357202.

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, 40375 + ... + 40924.

It is an arithmetic number, because the mean of its divisors is an integer number (2520300).

Almost surely, 2^22357225 is an apocalyptic number.

22357225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22357225 is a deficient number, since it is larger than the sum of its proper divisors (7886375).

22357225 is a wasteful number, since it uses less digits than its factorization.

22357225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81320 (or 81315 counting only the distinct ones).

The product of its digits is 8400, while the sum is 28.

The square root of 22357225 is about 4728.3427329245. The cubic root of 22357225 is about 281.7124014917.

The spelling of 22357225 in words is "twenty-two million, three hundred fifty-seven thousand, two hundred twenty-five".