22648745025 has 81 divisors (see below), whose sum is σ = 41412480291. Its totient is φ = 11832518880.

The previous prime is 22648744999. The next prime is 22648745027. The reversal of 22648745025 is 52054784622.

The square root of 22648745025 is 150495.

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

22648745025 is a `hidden beast` number, since 2 + 2 + 64 + 87 + 4 + 502 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8153548209 + 14495196816 = 90297^2 + 120396^2 .

It is not a de Polignac number, because 22648745025 - 2¹⁹ = 22648220737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (22648745027) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 178336512 + ... + 178336638.

Almost surely, 2^22648745025 is an apocalyptic number.

22648745025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22648745025 is the 150495-th square number.

22648745025 is the 75248-th centered octagonal number.

It is an amenable number.

22648745025 is a deficient number, since it is larger than the sum of its proper divisors (18763735266).

22648745025 is an equidigital number, since it uses as much as digits as its factorization.

22648745025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 22648745025 in words is "twenty-two billion, six hundred forty-eight million, seven hundred forty-five thousand, twenty-five".