91250609625 has 192 divisors, whose sum is σ = 193329077760. Its totient is φ = 40538880000.

The previous prime is 91250609591. The next prime is 91250609627. The reversal of 91250609625 is 52690605219.

It is a happy number.

91250609625 is a `hidden beast` number, since 9 + 12 + 5 + 0 + 6 + 0 + 9 + 625 = 666.

It is not a de Polignac number, because 91250609625 - 2¹² = 91250605529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (91250609627) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 132055530 + ... + 132056220.

It is an arithmetic number, because the mean of its divisors is an integer number (1006922280).

Almost surely, 2^91250609625 is an apocalyptic number.

It is an amenable number.

91250609625 is an abundant number, since it is smaller than the sum of its proper divisors (102078468135).

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

91250609625 is a wasteful number, since it uses less digits than its factorization.

91250609625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 91250609625 in words is "ninety-one billion, two hundred fifty million, six hundred nine thousand, six hundred twenty-five".