861282625 has 16 divisors (see below), whose sum is σ = 1228436352. Its totient is φ = 590593200.

The previous prime is 861282589. The next prime is 861282659. The reversal of 861282625 is 526282168.

It is a de Polignac number, because none of the positive numbers 2^k-861282625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491287 + ... + 493036.

It is an arithmetic number, because the mean of its divisors is an integer number (76777272).

Almost surely, 2^861282625 is an apocalyptic number.

It is an amenable number.

861282625 is a deficient number, since it is larger than the sum of its proper divisors (367153727).

861282625 is an equidigital number, since it uses as much as digits as its factorization.

861282625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984345 (or 984335 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 861282625 is about 29347.6170242151. The cubic root of 861282625 is about 951.4410723701.

The spelling of 861282625 in words is "eight hundred sixty-one million, two hundred eighty-two thousand, six hundred twenty-five".