22725331 has 4 divisors (see below), whose sum is σ = 22878000. Its totient is φ = 22572664.

The previous prime is 22725281. The next prime is 22725341. The reversal of 22725331 is 13352722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22725331 - 2¹⁵ = 22692563 is a prime.

It is a super-2 number, since 2×22725331² = 1032881338119122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22725296 and 22725305.

It is not an unprimeable number, because it can be changed into a prime (22725341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76111 + ... + 76408.

It is an arithmetic number, because the mean of its divisors is an integer number (5719500).

Almost surely, 2^22725331 is an apocalyptic number.

22725331 is a deficient number, since it is larger than the sum of its proper divisors (152669).

22725331 is a wasteful number, since it uses less digits than its factorization.

22725331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152668.

The product of its digits is 2520, while the sum is 25.

The square root of 22725331 is about 4767.1092918036. The cubic root of 22725331 is about 283.2501004267.

The spelling of 22725331 in words is "twenty-two million, seven hundred twenty-five thousand, three hundred thirty-one".