8997697925 has 12 divisors (see below), whose sum is σ = 11458691076. Its totient is φ = 7003612800.

The previous prime is 8997697921. The next prime is 8997697949. The reversal of 8997697925 is 5297967998.

It can be written as a sum of positive squares in 6 ways, for example, as 451435009 + 8546262916 = 21247^2 + 92446^2 .

It is not a de Polignac number, because 8997697925 - 2² = 8997697921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8997697921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4862696 + ... + 4864545.

It is an arithmetic number, because the mean of its divisors is an integer number (954890923).

Almost surely, 2^8997697925 is an apocalyptic number.

It is an amenable number.

8997697925 is a deficient number, since it is larger than the sum of its proper divisors (2460993151).

8997697925 is a wasteful number, since it uses less digits than its factorization.

8997697925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9727288 (or 9727283 counting only the distinct ones).

The product of its digits is 154314720, while the sum is 71.

The square root of 8997697925 is about 94856.1960285147. The cubic root of 8997697925 is about 2079.9064557444.

The spelling of 8997697925 in words is "eight billion, nine hundred ninety-seven million, six hundred ninety-seven thousand, nine hundred twenty-five".