22144240451225 has 12 divisors (see below), whose sum is σ = 28097436257616. Its totient is φ = 17303406491280.

The previous prime is 22144240451213. The next prime is 22144240451233. The reversal of 22144240451225 is 52215404244122.

It is not a de Polignac number, because 22144240451225 - 2⁴ = 22144240451209 is a prime.

It is a Duffinian number.

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, 10299645647 + ... + 10299647796.

It is an arithmetic number, because the mean of its divisors is an integer number (2341453021468).

Almost surely, 2^{22144240451225} is an apocalyptic number.

22144240451225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22144240451225 is a deficient number, since it is larger than the sum of its proper divisors (5953195806391).

22144240451225 is a wasteful number, since it uses less digits than its factorization.

22144240451225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20599293496 (or 20599293491 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 38.

Adding to 22144240451225 its reverse (52215404244122), we get a palindrome (74359644695347).

The spelling of 22144240451225 in words is "twenty-two trillion, one hundred forty-four billion, two hundred forty million, four hundred fifty-one thousand, two hundred twenty-five".