22155325 has 24 divisors (see below), whose sum is σ = 29248128. Its totient is φ = 16610880.

The previous prime is 22155317. The next prime is 22155361. The reversal of 22155325 is 52355122.

It is a happy number.

It is not a de Polignac number, because 22155325 - 2³ = 22155317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22155325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30112 + ... + 30838.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^22155325 is an apocalyptic number.

22155325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22155325 is a deficient number, since it is larger than the sum of its proper divisors (7092803).

22155325 is a wasteful number, since it uses less digits than its factorization.

22155325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 808 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 22155325 is about 4706.9443378906. The cubic root of 22155325 is about 280.8618216885.

The spelling of 22155325 in words is "twenty-two million, one hundred fifty-five thousand, three hundred twenty-five".