860642225 has 6 divisors (see below), whose sum is σ = 1067196390. Its totient is φ = 688513760.

The previous prime is 860642219. The next prime is 860642273. The reversal of 860642225 is 522246068.

It can be written as a sum of positive squares in 3 ways, for example, as 13075456 + 847566769 = 3616^2 + 29113^2 .

It is not a de Polignac number, because 860642225 - 2¹⁴ = 860625841 is a prime.

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, 17212820 + ... + 17212869.

It is an arithmetic number, because the mean of its divisors is an integer number (177866065).

Almost surely, 2^860642225 is an apocalyptic number.

It is an amenable number.

860642225 is a deficient number, since it is larger than the sum of its proper divisors (206554165).

860642225 is a wasteful number, since it uses less digits than its factorization.

860642225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34425699 (or 34425694 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 860642225 is about 29336.7043990970. The cubic root of 860642225 is about 951.2052016963.

The spelling of 860642225 in words is "eight hundred sixty million, six hundred forty-two thousand, two hundred twenty-five".