91053972525 has 12 divisors (see below), whose sum is σ = 150542568032. Its totient is φ = 48562118640.

The previous prime is 91053972523. The next prime is 91053972539. The reversal of 91053972525 is 52527935019.

It is not a de Polignac number, because 91053972525 - 2¹ = 91053972523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91053972521) 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, 607026409 + ... + 607026558.

Almost surely, 2^91053972525 is an apocalyptic number.

It is an amenable number.

91053972525 is a deficient number, since it is larger than the sum of its proper divisors (59488595507).

91053972525 is a wasteful number, since it uses less digits than its factorization.

91053972525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214052980 (or 1214052975 counting only the distinct ones).

The product of its (nonzero) digits is 850500, while the sum is 48.

The spelling of 91053972525 in words is "ninety-one billion, fifty-three million, nine hundred seventy-two thousand, five hundred twenty-five".