2155132125250 has 128 divisors (see below), whose sum is σ = 4639088982528. Its totient is φ = 743441529600.

The previous prime is 2155132125233. The next prime is 2155132125271. The reversal of 2155132125250 is 525212315512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2879004 + ... + 3549496.

It is an arithmetic number, because the mean of its divisors is an integer number (36242882676).

Almost surely, 2^{2155132125250} is an apocalyptic number.

2155132125250 is an abundant number, since it is smaller than the sum of its proper divisors (2483956857278).

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

2155132125250 is a wasteful number, since it uses less digits than its factorization.

2155132125250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670589 (or 670579 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 2155132125250 in words is "two trillion, one hundred fifty-five billion, one hundred thirty-two million, one hundred twenty-five thousand, two hundred fifty".