22144331425 has 12 divisors (see below), whose sum is σ = 27461953260. Its totient is φ = 17713541120.

The previous prime is 22144331411. The next prime is 22144331449. The reversal of 22144331425 is 52413344122.

It can be written as a sum of positive squares in 6 ways, for example, as 321951249 + 21822380176 = 17943^2 + 147724^2 .

It is not a de Polignac number, because 22144331425 - 2³¹ = 19996847777 is a prime.

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, 214881 + ... + 300769.

It is an arithmetic number, because the mean of its divisors is an integer number (2288496105).

Almost surely, 2^22144331425 is an apocalyptic number.

22144331425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22144331425 is a deficient number, since it is larger than the sum of its proper divisors (5317621835).

22144331425 is a wasteful number, since it uses less digits than its factorization.

22144331425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96212 (or 96207 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

Adding to 22144331425 its reverse (52413344122), we get a palindrome (74557675547).

The spelling of 22144331425 in words is "twenty-two billion, one hundred forty-four million, three hundred thirty-one thousand, four hundred twenty-five".