77197325 has 6 divisors (see below), whose sum is σ = 95724714. Its totient is φ = 61757840.

The previous prime is 77197321. The next prime is 77197339. The reversal of 77197325 is 52379177.

It can be written as a sum of positive squares in 3 ways, for example, as 22762441 + 54434884 = 4771^2 + 7378^2 .

It is not a de Polignac number, because 77197325 - 2² = 77197321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77197321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1543922 + ... + 1543971.

It is an arithmetic number, because the mean of its divisors is an integer number (15954119).

Almost surely, 2^77197325 is an apocalyptic number.

It is an amenable number.

77197325 is a deficient number, since it is larger than the sum of its proper divisors (18527389).

77197325 is a wasteful number, since it uses less digits than its factorization.

77197325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087903 (or 3087898 counting only the distinct ones).

The product of its digits is 92610, while the sum is 41.

The square root of 77197325 is about 8786.2008285720. The cubic root of 77197325 is about 425.7951894463.

The spelling of 77197325 in words is "seventy-seven million, one hundred ninety-seven thousand, three hundred twenty-five".