22465513225 has 27 divisors (see below), whose sum is σ = 28814642631. Its totient is φ = 17374669200.

The previous prime is 22465513207. The next prime is 22465513229. The reversal of 22465513225 is 52231556422.

The square root of 22465513225 is 149885.

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

It can be written as a sum of positive squares in only one way, i.e., 8087584761 + 14377928464 = 89931^2 + 119908^2 .

It is not a de Polignac number, because 22465513225 - 2¹³ = 22465505033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22465513229) 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, 23231692 + ... + 23232658.

Almost surely, 2^22465513225 is an apocalyptic number.

22465513225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22465513225 is the 149885-th square number.

22465513225 is the 74943-rd centered octagonal number.

It is an amenable number.

22465513225 is a deficient number, since it is larger than the sum of its proper divisors (6349129406).

22465513225 is an frugal number, since it uses more digits than its factorization.

22465513225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 1003 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The spelling of 22465513225 in words is "twenty-two billion, four hundred sixty-five million, five hundred thirteen thousand, two hundred twenty-five".