97571609425 has 24 divisors (see below), whose sum is σ = 124314259896. Its totient is φ = 75913712640.

The previous prime is 97571609407. The next prime is 97571609431. The reversal of 97571609425 is 52490617579.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 27805896001 + 69765713424 = 166751^2 + 264132^2 .

It is not a de Polignac number, because 97571609425 - 2⁵ = 97571609393 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2157849 + ... + 2202601.

It is an arithmetic number, because the mean of its divisors is an integer number (5179760829).

Almost surely, 2^97571609425 is an apocalyptic number.

It is an amenable number.

97571609425 is a deficient number, since it is larger than the sum of its proper divisors (26742650471).

97571609425 is a wasteful number, since it uses less digits than its factorization.

97571609425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47157 (or 47152 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 97571609425 in words is "ninety-seven billion, five hundred seventy-one million, six hundred nine thousand, four hundred twenty-five".