97789725 has 36 divisors (see below), whose sum is σ = 191080032. Its totient is φ = 47412000.

The previous prime is 97789723. The next prime is 97789733. The reversal of 97789725 is 52798779.

It is not a de Polignac number, because 97789725 - 2¹ = 97789723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97789723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17281 + ... + 22230.

Almost surely, 2^97789725 is an apocalyptic number.

It is an amenable number.

97789725 is a deficient number, since it is larger than the sum of its proper divisors (93290307).

97789725 is a wasteful number, since it uses less digits than its factorization.

97789725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39538 (or 39530 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 97789725 is about 9888.8687421767. The cubic root of 97789725 is about 460.7136449552.

It can be divided in two parts, 9778 and 9725, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 97789725 in words is "ninety-seven million, seven hundred eighty-nine thousand, seven hundred twenty-five".