22135423225625 has 20 divisors (see below), whose sum is σ = 27664963381044. Its totient is φ = 17705433000000.

The previous prime is 22135423225541. The next prime is 22135423225633. The reversal of 22135423225625 is 52652232453122.

It can be written as a sum of positive squares in 10 ways, for example, as 12684453202576 + 9450970023049 = 3561524^2 + 3074243^2 .

It is not a de Polignac number, because 22135423225625 - 2⁸ = 22135423225369 is a prime.

It is a super-2 number, since 2×22135423225625² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 910595 + ... + 6715655.

Almost surely, 2^{22135423225625} is an apocalyptic number.

22135423225625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22135423225625 is a deficient number, since it is larger than the sum of its proper divisors (5529540155419).

22135423225625 is an frugal number, since it uses more digits than its factorization.

22135423225625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811182 (or 5811167 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 44.

Adding to 22135423225625 its reverse (52652232453122), we get a palindrome (74787655678747).

The spelling of 22135423225625 in words is "twenty-two trillion, one hundred thirty-five billion, four hundred twenty-three million, two hundred twenty-five thousand, six hundred twenty-five".