7999290025 has 6 divisors (see below), whose sum is σ = 9919119662. Its totient is φ = 6399432000.

The previous prime is 7999289989. The next prime is 7999290029. The reversal of 7999290025 is 5200929997.

It can be written as a sum of positive squares in 3 ways, for example, as 1048399641 + 6950890384 = 32379^2 + 83372^2 .

It is not a de Polignac number, because 7999290025 - 2¹⁵ = 7999257257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7999290029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 159985776 + ... + 159985825.

Almost surely, 2^7999290025 is an apocalyptic number.

It is an amenable number.

7999290025 is a deficient number, since it is larger than the sum of its proper divisors (1919829637).

7999290025 is a wasteful number, since it uses less digits than its factorization.

7999290025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319971611 (or 319971606 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 7999290025 is about 89438.7501310254. The cubic root of 7999290025 is about 1999.9408336664.

The spelling of 7999290025 in words is "seven billion, nine hundred ninety-nine million, two hundred ninety thousand, twenty-five".