8631662025 has 96 divisors (see below), whose sum is σ = 17345104128. Its totient is φ = 3697459200.

The previous prime is 8631662021. The next prime is 8631662029. The reversal of 8631662025 is 5202661368.

It is an interprime number because it is at equal distance from previous prime (8631662021) and next prime (8631662029).

It is not a de Polignac number, because 8631662025 - 2² = 8631662021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8631662021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2148919 + ... + 2152931.

It is an arithmetic number, because the mean of its divisors is an integer number (180678168).

Almost surely, 2^8631662025 is an apocalyptic number.

8631662025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8631662025 is an abundant number, since it is smaller than the sum of its proper divisors (8713442103).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8631662025 is a wasteful number, since it uses less digits than its factorization.

8631662025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 8631662025 is about 92906.7383185956. The cubic root of 8631662025 is about 2051.3108431602.

The spelling of 8631662025 in words is "eight billion, six hundred thirty-one million, six hundred sixty-two thousand, twenty-five".