22222198025 has 24 divisors (see below), whose sum is σ = 28043231160. Its totient is φ = 17465794560.

The previous prime is 22222198021. The next prime is 22222198051. The reversal of 22222198025 is 52089122222.

It can be written as a sum of positive squares in 12 ways, for example, as 6156128521 + 16066069504 = 78461^2 + 126752^2 .

It is not a de Polignac number, because 22222198025 - 2² = 22222198021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22222198021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298781 + ... + 365669.

It is an arithmetic number, because the mean of its divisors is an integer number (1168467965).

Almost surely, 2^22222198025 is an apocalyptic number.

22222198025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22222198025 is a deficient number, since it is larger than the sum of its proper divisors (5821033135).

22222198025 is a wasteful number, since it uses less digits than its factorization.

22222198025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67133 (or 67128 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 22222198025 in words is "twenty-two billion, two hundred twenty-two million, one hundred ninety-eight thousand, twenty-five".