863398725 has 48 divisors (see below), whose sum is σ = 1702367232. Its totient is φ = 377530560.

The previous prime is 863398721. The next prime is 863398777. The reversal of 863398725 is 527893368.

It is not a de Polignac number, because 863398725 - 2² = 863398721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863398721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23677 + ... + 47826.

It is an arithmetic number, because the mean of its divisors is an integer number (35465984).

Almost surely, 2^863398725 is an apocalyptic number.

It is an amenable number.

863398725 is a deficient number, since it is larger than the sum of its proper divisors (838968507).

863398725 is a wasteful number, since it uses less digits than its factorization.

863398725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71546 (or 71541 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 51.

The square root of 863398725 is about 29383.6472378771. The cubic root of 863398725 is about 952.2196390366.

The spelling of 863398725 in words is "eight hundred sixty-three million, three hundred ninety-eight thousand, seven hundred twenty-five".