22394406725 has 6 divisors (see below), whose sum is σ = 27769064370. Its totient is φ = 17915525360.

The previous prime is 22394406721. The next prime is 22394406761. The reversal of 22394406725 is 52760449322.

It can be written as a sum of positive squares in 3 ways, for example, as 6466849 + 22387939876 = 2543^2 + 149626^2 .

It is not a de Polignac number, because 22394406725 - 2² = 22394406721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22394406721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447888110 + ... + 447888159.

It is an arithmetic number, because the mean of its divisors is an integer number (4628177395).

Almost surely, 2^22394406725 is an apocalyptic number.

22394406725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22394406725 is a deficient number, since it is larger than the sum of its proper divisors (5374657645).

22394406725 is an equidigital number, since it uses as much as digits as its factorization.

22394406725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895776279 (or 895776274 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 22394406725 in words is "twenty-two billion, three hundred ninety-four million, four hundred six thousand, seven hundred twenty-five".