870525457 has 2 divisors, whose sum is σ = 870525458. Its totient is φ = 870525456.

The previous prime is 870525421. The next prime is 870525503. The reversal of 870525457 is 754525078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729486081 + 141039376 = 27009^2 + 11876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870525457 is a prime.

It is not a weakly prime, because it can be changed into another prime (870525757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435262728 + 435262729.

It is an arithmetic number, because the mean of its divisors is an integer number (435262729).

Almost surely, 2^870525457 is an apocalyptic number.

It is an amenable number.

870525457 is a deficient number, since it is larger than the sum of its proper divisors (1).

870525457 is an equidigital number, since it uses as much as digits as its factorization.

870525457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392000, while the sum is 43.

The square root of 870525457 is about 29504.6683933238. The cubic root of 870525457 is about 954.8324247513.

The spelling of 870525457 in words is "eight hundred seventy million, five hundred twenty-five thousand, four hundred fifty-seven".