22505541425 has 12 divisors (see below), whose sum is σ = 28110575436. Its totient is φ = 17873011200.

The previous prime is 22505541397. The next prime is 22505541431. The reversal of 22505541425 is 52414550522.

It can be written as a sum of positive squares in 6 ways, for example, as 146918641 + 22358622784 = 12121^2 + 149528^2 .

It is not a de Polignac number, because 22505541425 - 2²⁶ = 22438432561 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, 3282056 + ... + 3288905.

It is an arithmetic number, because the mean of its divisors is an integer number (2342547953).

Almost surely, 2^22505541425 is an apocalyptic number.

22505541425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22505541425 is a deficient number, since it is larger than the sum of its proper divisors (5605034011).

22505541425 is a wasteful number, since it uses less digits than its factorization.

22505541425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6571108 (or 6571103 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 22505541425 in words is "twenty-two billion, five hundred five million, five hundred forty-one thousand, four hundred twenty-five".