864861234725 has 6 divisors (see below), whose sum is σ = 1072427931090. Its totient is φ = 691888987760.

The previous prime is 864861234697. The next prime is 864861234739. The reversal of 864861234725 is 527432168468.

It can be written as a sum of positive squares in 3 ways, for example, as 13784873281 + 851076361444 = 117409^2 + 922538^2 .

It is not a de Polignac number, because 864861234725 - 2²⁶ = 864794125861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17297224670 + ... + 17297224719.

It is an arithmetic number, because the mean of its divisors is an integer number (178737988515).

Almost surely, 2^864861234725 is an apocalyptic number.

It is an amenable number.

864861234725 is a deficient number, since it is larger than the sum of its proper divisors (207566696365).

864861234725 is a wasteful number, since it uses less digits than its factorization.

864861234725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34594449399 (or 34594449394 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 56.

The spelling of 864861234725 in words is "eight hundred sixty-four billion, eight hundred sixty-one million, two hundred thirty-four thousand, seven hundred twenty-five".