1255868488 has 64 divisors (see below), whose sum is σ = 2744824320. Its totient is φ = 527558400.

The previous prime is 1255868459. The next prime is 1255868491. The reversal of 1255868488 is 8848685521.

It is a super-2 number, since 2×1255868488² = 3154411318302812288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471870 + ... + 1472722.

It is an arithmetic number, because the mean of its divisors is an integer number (42887880).

Almost surely, 2^1255868488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255868488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372412160).

1255868488 is an abundant number, since it is smaller than the sum of its proper divisors (1488955832).

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

1255868488 is a wasteful number, since it uses less digits than its factorization.

1255868488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358 (or 1354 counting only the distinct ones).

The product of its digits is 4915200, while the sum is 55.

The square root of 1255868488 is about 35438.2348318874. The cubic root of 1255868488 is about 1078.9004836465.

The spelling of 1255868488 in words is "one billion, two hundred fifty-five million, eight hundred sixty-eight thousand, four hundred eighty-eight".