870255525557 has 8 divisors (see below), whose sum is σ = 949809009792. Its totient is φ = 790775265600.

The previous prime is 870255525493. The next prime is 870255525563. The reversal of 870255525557 is 755525552078.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 870255525557 - 2⁶ = 870255525493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870155525557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18281213 + ... + 18328754.

It is an arithmetic number, because the mean of its divisors is an integer number (118726126224).

Almost surely, 2^870255525557 is an apocalyptic number.

It is an amenable number.

870255525557 is a deficient number, since it is larger than the sum of its proper divisors (79553484235).

870255525557 is a wasteful number, since it uses less digits than its factorization.

870255525557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36612139.

The product of its (nonzero) digits is 24500000, while the sum is 56.

The spelling of 870255525557 in words is "eight hundred seventy billion, two hundred fifty-five million, five hundred twenty-five thousand, five hundred fifty-seven".