863122725 has 72 divisors (see below), whose sum is σ = 1708229952. Its totient is φ = 414374400.

The previous prime is 863122721. The next prime is 863122763. The reversal of 863122725 is 527221368.

863122725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 863122725 - 2² = 863122721 is a prime.

It is a super-2 number, since 2×863122725² = 1489961676822851250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 863122725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863122721) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 83070 + ... + 92880.

It is an arithmetic number, because the mean of its divisors is an integer number (23725416).

Almost surely, 2^863122725 is an apocalyptic number.

863122725 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

863122725 is a deficient number, since it is larger than the sum of its proper divisors (845107227).

863122725 is a wasteful number, since it uses less digits than its factorization.

863122725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9867 (or 9859 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 863122725 is about 29378.9503726733. The cubic root of 863122725 is about 952.1181638541.

The spelling of 863122725 in words is "eight hundred sixty-three million, one hundred twenty-two thousand, seven hundred twenty-five".