7943265625 has 63 divisors (see below), whose sum is σ = 10725038499. Its totient is φ = 5882250000.

The previous prime is 7943265613. The next prime is 7943265637. The reversal of 7943265625 is 5265623497.

The square root of 7943265625 is 89125.

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

It is an interprime number because it is at equal distance from previous prime (7943265613) and next prime (7943265637).

It can be written as a sum of positive squares in 3 ways, for example, as 6959063241 + 984202384 = 83421^2 + 31372^2 .

It is not a de Polignac number, because 7943265625 - 2⁵ = 7943265593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 62 ways as a sum of consecutive naturals, for example, 256234360 + ... + 256234390.

Almost surely, 2^7943265625 is an apocalyptic number.

7943265625 is the 89125-th square number.

7943265625 is the 44563-rd centered octagonal number.

It is an amenable number.

7943265625 is a deficient number, since it is larger than the sum of its proper divisors (2781772874).

7943265625 is an frugal number, since it uses more digits than its factorization.

7943265625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 59 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 49.

The cubic root of 7943265625 is about 1995.2609148221.

Multiplying 7943265625 by its sum of digits (49), we get a square (389220015625 = 623875²).

The spelling of 7943265625 in words is "seven billion, nine hundred forty-three million, two hundred sixty-five thousand, six hundred twenty-five".