870525 has 36 divisors (see below), whose sum is σ = 1610388. Its totient is φ = 449280.

The previous prime is 870517. The next prime is 870533. The reversal of 870525 is 525078.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (870517) and next prime (870533).

It can be written as a sum of positive squares in 6 ways, for example, as 36 + 870489 = 6^2 + 933^2 .

It is not a de Polignac number, because 870525 - 2³ = 870517 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11889 + ... + 11961.

It is an arithmetic number, because the mean of its divisors is an integer number (44733).

2⁸⁷⁰⁵²⁵ is an apocalyptic number.

It is an amenable number.

870525 is a deficient number, since it is larger than the sum of its proper divisors (739863).

870525 is a wasteful number, since it uses less digits than its factorization.

870525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 870525 is about 933.0192924050. The cubic root of 870525 is about 95.4832257665.

The spelling of 870525 in words is "eight hundred seventy thousand, five hundred twenty-five".