91230525 has 36 divisors (see below), whose sum is σ = 166900032. Its totient is φ = 47615520.

The previous prime is 91230523. The next prime is 91230539. The reversal of 91230525 is 52503219.

It is not a de Polignac number, because 91230525 - 2¹ = 91230523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91230523) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6262 + ... + 14888.

It is an arithmetic number, because the mean of its divisors is an integer number (4636112).

Almost surely, 2^91230525 is an apocalyptic number.

It is an amenable number.

91230525 is a deficient number, since it is larger than the sum of its proper divisors (75669507).

91230525 is a wasteful number, since it uses less digits than its factorization.

91230525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8690 (or 8682 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 91230525 is about 9551.4671647868. The cubic root of 91230525 is about 450.1736366957.

The spelling of 91230525 in words is "ninety-one million, two hundred thirty thousand, five hundred twenty-five".