861263725 has 24 divisors (see below), whose sum is σ = 1237742208. Its totient is φ = 582254400.

The previous prime is 861263723. The next prime is 861263747. The reversal of 861263725 is 527362168.

It is not a de Polignac number, because 861263725 - 2¹ = 861263723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861263723) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 22234 + ... + 47083.

It is an arithmetic number, because the mean of its divisors is an integer number (51572592).

Almost surely, 2^861263725 is an apocalyptic number.

It is an amenable number.

861263725 is a deficient number, since it is larger than the sum of its proper divisors (376478483).

861263725 is a wasteful number, since it uses less digits than its factorization.

861263725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69405 (or 69400 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 861263725 is about 29347.2950201548. The cubic root of 861263725 is about 951.4341128397.

The spelling of 861263725 in words is "eight hundred sixty-one million, two hundred sixty-three thousand, seven hundred twenty-five".