1255545500 has 48 divisors (see below), whose sum is σ = 2991407328. Its totient is φ = 456560000.

The previous prime is 1255545497. The next prime is 1255545503. The reversal of 1255545500 is 55455521.

It is an interprime number because it is at equal distance from previous prime (1255545497) and next prime (1255545503).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255545503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108641 + ... + 119640.

It is an arithmetic number, because the mean of its divisors is an integer number (62320986).

Almost surely, 2^1255545500 is an apocalyptic number.

1255545500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255545500 is an abundant number, since it is smaller than the sum of its proper divisors (1735861828).

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

1255545500 is a wasteful number, since it uses less digits than its factorization.

1255545500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228311 (or 228299 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 1255545500 is about 35433.6774834338. The cubic root of 1255545500 is about 1078.8079841025.

The spelling of 1255545500 in words is "one billion, two hundred fifty-five million, five hundred forty-five thousand, five hundred".