97191725 has 12 divisors (see below), whose sum is σ = 122045760. Its totient is φ = 76767600.

The previous prime is 97191713. The next prime is 97191733. The reversal of 97191725 is 52719179.

It is a happy number.

It is not a de Polignac number, because 97191725 - 2⁴ = 97191709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22631 + ... + 26580.

It is an arithmetic number, because the mean of its divisors is an integer number (10170480).

Almost surely, 2^97191725 is an apocalyptic number.

It is an amenable number.

97191725 is a deficient number, since it is larger than the sum of its proper divisors (24854035).

97191725 is a wasteful number, since it uses less digits than its factorization.

97191725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49300 (or 49295 counting only the distinct ones).

The product of its digits is 39690, while the sum is 41.

The square root of 97191725 is about 9858.5863591085. The cubic root of 97191725 is about 459.7726113075.

The spelling of 97191725 in words is "ninety-seven million, one hundred ninety-one thousand, seven hundred twenty-five".