22291983025 has 27 divisors (see below), whose sum is σ = 29944970211. Its totient is φ = 16454605440.

The previous prime is 22291983011. The next prime is 22291983029. The reversal of 22291983025 is 52038919222.

The square root of 22291983025 is 149305.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 21201398449 + 1090584576 = 145607^2 + 33024^2 .

It is not a de Polignac number, because 22291983025 - 2⁷ = 22291982897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22291983029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9703677 + ... + 9705973.

Almost surely, 2^22291983025 is an apocalyptic number.

22291983025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22291983025 is the 149305-th square number.

22291983025 is the 74653-rd centered octagonal number.

It is an amenable number.

22291983025 is a deficient number, since it is larger than the sum of its proper divisors (7652987186).

22291983025 is an frugal number, since it uses more digits than its factorization.

22291983025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 2315 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 22291983025 in words is "twenty-two billion, two hundred ninety-one million, nine hundred eighty-three thousand, twenty-five".