22213181725 has 24 divisors (see below), whose sum is σ = 31487056128. Its totient is φ = 15228120000.

The previous prime is 22213181717. The next prime is 22213181743. The reversal of 22213181725 is 52718131222.

It is not a de Polignac number, because 22213181725 - 2³ = 22213181717 is a prime.

It is a Duffinian number.

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, 818067 + ... + 844783.

It is an arithmetic number, because the mean of its divisors is an integer number (1311960672).

Almost surely, 2^22213181725 is an apocalyptic number.

22213181725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22213181725 is a deficient number, since it is larger than the sum of its proper divisors (9273874403).

22213181725 is a wasteful number, since it uses less digits than its factorization.

22213181725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31485 (or 31480 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The spelling of 22213181725 in words is "twenty-two billion, two hundred thirteen million, one hundred eighty-one thousand, seven hundred twenty-five".