7980742225 has 27 divisors (see below), whose sum is σ = 10522499601. Its totient is φ = 6003312000.

The previous prime is 7980742223. The next prime is 7980742247. The reversal of 7980742225 is 5222470897.

The square root of 7980742225 is 89335.

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

It can be written as a sum of positive squares in 4 ways, for example, as 186677569 + 7794064656 = 13663^2 + 88284^2 .

It is not a de Polignac number, because 7980742225 - 2¹ = 7980742223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7980742223) 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, 7592950 + ... + 7594000.

Almost surely, 2^7980742225 is an apocalyptic number.

7980742225 is the 89335-th square number.

7980742225 is the 44668-th centered octagonal number.

It is an amenable number.

7980742225 is a deficient number, since it is larger than the sum of its proper divisors (2541757376).

7980742225 is an equidigital number, since it uses as much as digits as its factorization.

7980742225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 46.

The cubic root of 7980742225 is about 1998.3938959769.

The spelling of 7980742225 in words is "seven billion, nine hundred eighty million, seven hundred forty-two thousand, two hundred twenty-five".