97725492 has 18 divisors (see below), whose sum is σ = 247028418. Its totient is φ = 32575152.

The previous prime is 97725491. The next prime is 97725497. The reversal of 97725492 is 29452779.

97725492 is a `hidden beast` number, since 97 + 72 + 5 + 492 = 666.

It can be written as a sum of positive squares in only one way, i.e., 71470116 + 26255376 = 8454^2 + 5124^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97725491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1357263 + ... + 1357334.

It is an arithmetic number, because the mean of its divisors is an integer number (13723801).

Almost surely, 2^97725492 is an apocalyptic number.

It is an amenable number.

97725492 is an abundant number, since it is smaller than the sum of its proper divisors (149302926).

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

97725492 is a wasteful number, since it uses less digits than its factorization.

97725492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714607 (or 2714602 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 97725492 is about 9885.6204661114. The cubic root of 97725492 is about 460.6127498925.

The spelling of 97725492 in words is "ninety-seven million, seven hundred twenty-five thousand, four hundred ninety-two".