89121525 has 12 divisors (see below), whose sum is σ = 147347712. Its totient is φ = 47531440.

The previous prime is 89121523. The next prime is 89121551. The reversal of 89121525 is 52512198.

It is not a de Polignac number, because 89121525 - 2¹ = 89121523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89121523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 594069 + ... + 594218.

It is an arithmetic number, because the mean of its divisors is an integer number (12278976).

Almost surely, 2^89121525 is an apocalyptic number.

It is an amenable number.

89121525 is a deficient number, since it is larger than the sum of its proper divisors (58226187).

89121525 is a wasteful number, since it uses less digits than its factorization.

89121525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188300 (or 1188295 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 89121525 is about 9440.4197470240. The cubic root of 89121525 is about 446.6776299257.

The spelling of 89121525 in words is "eighty-nine million, one hundred twenty-one thousand, five hundred twenty-five".