989898525 has 144 divisors (see below), whose sum is σ = 2341243008. Its totient is φ = 387072000.

The previous prime is 989898517. The next prime is 989898527. The reversal of 989898525 is 525898989.

It is not a de Polignac number, because 989898525 - 2³ = 989898517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989898527) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 292845 + ... + 296205.

It is an arithmetic number, because the mean of its divisors is an integer number (16258632).

Almost surely, 2^989898525 is an apocalyptic number.

It is an amenable number.

989898525 is an abundant number, since it is smaller than the sum of its proper divisors (1351344483).

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

989898525 is a wasteful number, since it uses less digits than its factorization.

989898525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412 (or 3404 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 63.

The square root of 989898525 is about 31462.6528601769. The cubic root of 989898525 is about 996.6214398530.

The spelling of 989898525 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, five hundred twenty-five".