97688457725 has 12 divisors (see below), whose sum is σ = 127509145440. Its totient is φ = 74037567600.

The previous prime is 97688457721. The next prime is 97688457749. The reversal of 97688457725 is 52775488679.

It is not a de Polignac number, because 97688457725 - 2² = 97688457721 is a prime.

It is a super-2 number, since 2×97688457725² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97688457721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102829481 + ... + 102830430.

It is an arithmetic number, because the mean of its divisors is an integer number (10625762120).

Almost surely, 2^97688457725 is an apocalyptic number.

97688457725 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

97688457725 is a deficient number, since it is larger than the sum of its proper divisors (29820687715).

97688457725 is a wasteful number, since it uses less digits than its factorization.

97688457725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205659940 (or 205659935 counting only the distinct ones).

The product of its digits is 237081600, while the sum is 68.

The spelling of 97688457725 in words is "ninety-seven billion, six hundred eighty-eight million, four hundred fifty-seven thousand, seven hundred twenty-five".