22202490025 has 27 divisors (see below), whose sum is σ = 29262519471. Its totient is φ = 16707632640.

The previous prime is 22202490007. The next prime is 22202490029. The reversal of 22202490025 is 52009420222.

The square root of 22202490025 is 149005.

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 19970494489 + 2231995536 = 141317^2 + 47244^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22202490025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202489975 and 22202490002.

It is not an unprimeable number, because it can be changed into a prime (22202490029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12664549 + ... + 12666301.

Almost surely, 2^22202490025 is an apocalyptic number.

22202490025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22202490025 is the 149005-th square number.

22202490025 is the 74503-rd centered octagonal number.

It is an amenable number.

22202490025 is a deficient number, since it is larger than the sum of its proper divisors (7060029446).

22202490025 is an frugal number, since it uses more digits than its factorization.

22202490025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 22202490025 in words is "twenty-two billion, two hundred two million, four hundred ninety thousand, twenty-five".