1255638300 has 72 divisors (see below), whose sum is σ = 4151984256. Its totient is φ = 287002560.

The previous prime is 1255638299. The next prime is 1255638301. The reversal of 1255638300 is 38365521.

It is an interprime number because it is at equal distance from previous prime (1255638299) and next prime (1255638301).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255638301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296862 + ... + 301061.

It is an arithmetic number, because the mean of its divisors is an integer number (57666448).

Almost surely, 2^1255638300 is an apocalyptic number.

1255638300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255638300 is an abundant number, since it is smaller than the sum of its proper divisors (2896345956).

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

1255638300 is a wasteful number, since it uses less digits than its factorization.

1255638300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597947 (or 597940 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1255638300 is about 35434.9869479304. The cubic root of 1255638300 is about 1078.8345624343.

The spelling of 1255638300 in words is "one billion, two hundred fifty-five million, six hundred thirty-eight thousand, three hundred".