870730810825 has 12 divisors (see below), whose sum is σ = 1081301065740. Its totient is φ = 695555706560.

The previous prime is 870730810811. The next prime is 870730810841. The reversal of 870730810825 is 528018037078.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 29563019721 + 841167791104 = 171939^2 + 917152^2 .

It is not a de Polignac number, because 870730810825 - 2²⁵ = 870697256393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25706290 + ... + 25740139.

It is an arithmetic number, because the mean of its divisors is an integer number (90108422145).

Almost surely, 2^870730810825 is an apocalyptic number.

It is an amenable number.

870730810825 is a deficient number, since it is larger than the sum of its proper divisors (210570254915).

870730810825 is a wasteful number, since it uses less digits than its factorization.

870730810825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51447116 (or 51447111 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 870730810825 in words is "eight hundred seventy billion, seven hundred thirty million, eight hundred ten thousand, eight hundred twenty-five".