22516503025 has 9 divisors (see below), whose sum is σ = 27921394123. Its totient is φ = 18012602200.

The previous prime is 22516502999. The next prime is 22516503029. The reversal of 22516503025 is 52030561522.

It is a happy number.

The square root of 22516503025 is 150055.

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., 8105941089 + 14410561936 = 90033^2 + 120044^2 .

It is not a de Polignac number, because 22516503025 - 2⁹ = 22516502513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22516503029) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 735270 + ... + 765280.

Almost surely, 2^22516503025 is an apocalyptic number.

22516503025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22516503025 is the 150055-th square number.

22516503025 is the 75028-th centered octagonal number.

It is an amenable number.

22516503025 is a deficient number, since it is larger than the sum of its proper divisors (5404891098).

22516503025 is an frugal number, since it uses more digits than its factorization.

22516503025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60032 (or 30016 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 22516503025 in words is "twenty-two billion, five hundred sixteen million, five hundred three thousand, twenty-five".