8821161525 has 24 divisors (see below), whose sum is σ = 15910169184. Its totient is φ = 4276926400.

The previous prime is 8821161499. The next prime is 8821161539. The reversal of 8821161525 is 5251611288.

It is not a de Polignac number, because 8821161525 - 2⁵ = 8821161493 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5345334 + ... + 5346983.

It is an arithmetic number, because the mean of its divisors is an integer number (662923716).

Almost surely, 2^8821161525 is an apocalyptic number.

It is an amenable number.

8821161525 is a deficient number, since it is larger than the sum of its proper divisors (7089007659).

8821161525 is a wasteful number, since it uses less digits than its factorization.

8821161525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10692341 (or 10692336 counting only the distinct ones).

The product of its digits is 38400, while the sum is 39.

The square root of 8821161525 is about 93921.0387772623. The cubic root of 8821161525 is about 2066.2138017285.

The spelling of 8821161525 in words is "eight billion, eight hundred twenty-one million, one hundred sixty-one thousand, five hundred twenty-five".