1255154515500 has 48 divisors (see below), whose sum is σ = 3655009953504. Its totient is φ = 334707870400.

The previous prime is 1255154515493. The next prime is 1255154515501. The reversal of 1255154515500 is 55154515521.

It is not an unprimeable number, because it can be changed into a prime (1255154515501) 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, 418383339 + ... + 418386338.

It is an arithmetic number, because the mean of its divisors is an integer number (76146040698).

Almost surely, 2^{1255154515500} is an apocalyptic number.

1255154515500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255154515500 is an abundant number, since it is smaller than the sum of its proper divisors (2399855438004).

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

1255154515500 is a wasteful number, since it uses less digits than its factorization.

1255154515500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836769699 (or 836769687 counting only the distinct ones).

The product of its (nonzero) digits is 125000, while the sum is 39.

The spelling of 1255154515500 in words is "one trillion, two hundred fifty-five billion, one hundred fifty-four million, five hundred fifteen thousand, five hundred".