22279169025 has 36 divisors (see below), whose sum is σ = 40004141580. Its totient is φ = 11852544000.

The previous prime is 22279169021. The next prime is 22279169027. The reversal of 22279169025 is 52096197222.

It can be written as a sum of positive squares in 6 ways, for example, as 472149441 + 21807019584 = 21729^2 + 147672^2 .

It is not a de Polignac number, because 22279169025 - 2² = 22279169021 is a prime.

It is a super-2 number, since 2×22279169025² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (22279169021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33240 + ... + 213689.

It is an arithmetic number, because the mean of its divisors is an integer number (1111226155).

Almost surely, 2^22279169025 is an apocalyptic number.

22279169025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22279169025 is a deficient number, since it is larger than the sum of its proper divisors (17724972555).

22279169025 is a wasteful number, since it uses less digits than its factorization.

22279169025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247346 (or 247338 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 22279169025 in words is "twenty-two billion, two hundred seventy-nine million, one hundred sixty-nine thousand, twenty-five".