870425 has 12 divisors (see below), whose sum is σ = 1109676. Its totient is φ = 676800.

The previous prime is 870413. The next prime is 870431. The reversal of 870425 is 524078.

It can be written as a sum of positive squares in 6 ways, for example, as 18496 + 851929 = 136^2 + 923^2 .

It is not a de Polignac number, because 870425 - 2⁸ = 870169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870394 and 870403.

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, 455 + ... + 1395.

It is an arithmetic number, because the mean of its divisors is an integer number (92473).

2⁸⁷⁰⁴²⁵ is an apocalyptic number.

It is an amenable number.

870425 is a deficient number, since it is larger than the sum of its proper divisors (239251).

870425 is a wasteful number, since it uses less digits than its factorization.

870425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 870425 is about 932.9657014060. The cubic root of 870425 is about 95.4795694717.

The spelling of 870425 in words is "eight hundred seventy thousand, four hundred twenty-five".