87257500256 has 24 divisors (see below), whose sum is σ = 175783280904. Its totient is φ = 42614127360.

The previous prime is 87257500223. The next prime is 87257500289. The reversal of 87257500256 is 65200575278.

It is an interprime number because it is at equal distance from previous prime (87257500223) and next prime (87257500289).

It is a super-2 number, since 2×87257500256² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87257500256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31705565 + ... + 31708316.

It is an arithmetic number, because the mean of its divisors is an integer number (7324303371).

Almost surely, 2^87257500256 is an apocalyptic number.

87257500256 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

87257500256 is an abundant number, since it is smaller than the sum of its proper divisors (88525780648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87257500256 is a wasteful number, since it uses less digits than its factorization.

87257500256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63413934 (or 63413926 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 87257500256 in words is "eighty-seven billion, two hundred fifty-seven million, five hundred thousand, two hundred fifty-six".