97221397625 has 64 divisors (see below), whose sum is σ = 136306879488. Its totient is φ = 69196512000.

The previous prime is 97221397579. The next prime is 97221397633. The reversal of 97221397625 is 52679312279.

It is not a de Polignac number, because 97221397625 - 2¹⁸ = 97221135481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7813409 + ... + 7825841.

It is an arithmetic number, because the mean of its divisors is an integer number (2129794992).

Almost surely, 2^97221397625 is an apocalyptic number.

It is an amenable number.

97221397625 is a deficient number, since it is larger than the sum of its proper divisors (39085481863).

97221397625 is a wasteful number, since it uses less digits than its factorization.

97221397625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12528 (or 12496 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 53.

The spelling of 97221397625 in words is "ninety-seven billion, two hundred twenty-one million, three hundred ninety-seven thousand, six hundred twenty-five".