91840125 has 32 divisors (see below), whose sum is σ = 164586240. Its totient is φ = 45211200.

The previous prime is 91840121. The next prime is 91840141. The reversal of 91840125 is 52104819.

It is a happy number.

It is not a de Polignac number, because 91840125 - 2² = 91840121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91840092 and 91840101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91840121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4545 + ... + 14294.

It is an arithmetic number, because the mean of its divisors is an integer number (5143320).

Almost surely, 2^91840125 is an apocalyptic number.

It is an amenable number.

91840125 is a deficient number, since it is larger than the sum of its proper divisors (72746115).

91840125 is a wasteful number, since it uses less digits than its factorization.

91840125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18870 (or 18860 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 91840125 is about 9583.3253623155. The cubic root of 91840125 is about 451.1740945010.

The spelling of 91840125 in words is "ninety-one million, eight hundred forty thousand, one hundred twenty-five".