8857407825 has 54 divisors (see below), whose sum is σ = 18454763574. Its totient is φ = 4049095680.

The previous prime is 8857407803. The next prime is 8857407829. The reversal of 8857407825 is 5287047588.

It can be written as a sum of positive squares in 3 ways, for example, as 53714241 + 8803693584 = 7329^2 + 93828^2 .

It is not a de Polignac number, because 8857407825 - 2⁸ = 8857407569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8857407829) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 390672 + ... + 412721.

It is an arithmetic number, because the mean of its divisors is an integer number (341754881).

Almost surely, 2^8857407825 is an apocalyptic number.

It is an amenable number.

8857407825 is an abundant number, since it is smaller than the sum of its proper divisors (9597355749).

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

8857407825 is a wasteful number, since it uses less digits than its factorization.

8857407825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803423 (or 803408 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 54.

The square root of 8857407825 is about 94113.8025212030. The cubic root of 8857407825 is about 2069.0399700025.

The spelling of 8857407825 in words is "eight billion, eight hundred fifty-seven million, four hundred seven thousand, eight hundred twenty-five".