91873925 has 48 divisors (see below), whose sum is σ = 138324480. Its totient is φ = 59616000.

The previous prime is 91873921. The next prime is 91873939. The reversal of 91873925 is 52937819.

It is not a de Polignac number, because 91873925 - 2² = 91873921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91873921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110411 + ... + 111239.

It is an arithmetic number, because the mean of its divisors is an integer number (2881760).

Almost surely, 2^91873925 is an apocalyptic number.

It is an amenable number.

91873925 is a deficient number, since it is larger than the sum of its proper divisors (46450555).

91873925 is a wasteful number, since it uses less digits than its factorization.

91873925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 889 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 91873925 is about 9585.0886798193. The cubic root of 91873925 is about 451.2294363754.

The spelling of 91873925 in words is "ninety-one million, eight hundred seventy-three thousand, nine hundred twenty-five".