869889025 has 12 divisors (see below), whose sum is σ = 1079807872. Its totient is φ = 695172240.

The previous prime is 869889023. The next prime is 869889037. The reversal of 869889025 is 520988968.

It is not a de Polignac number, because 869889025 - 2¹ = 869889023 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869889023) 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, 6184 + ... + 42166.

Almost surely, 2^869889025 is an apocalyptic number.

It is an amenable number.

869889025 is a deficient number, since it is larger than the sum of its proper divisors (209918847).

869889025 is a wasteful number, since it uses less digits than its factorization.

869889025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36960 (or 36955 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The square root of 869889025 is about 29493.8811450782. The cubic root of 869889025 is about 954.5996787104.

The spelling of 869889025 in words is "eight hundred sixty-nine million, eight hundred eighty-nine thousand, twenty-five".