1155411125250 has 64 divisors (see below), whose sum is σ = 2884395795840. Its totient is φ = 308057323200.

The previous prime is 1155411125227. The next prime is 1155411125279. The reversal of 1155411125250 is 525211145511.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4393989 + ... + 4649511.

It is an arithmetic number, because the mean of its divisors is an integer number (45068684310).

Almost surely, 2^{1155411125250} is an apocalyptic number.

1155411125250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155411125250 is an abundant number, since it is smaller than the sum of its proper divisors (1728984670590).

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

1155411125250 is a wasteful number, since it uses less digits than its factorization.

1155411125250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261572 (or 261562 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 33.

The spelling of 1155411125250 in words is "one trillion, one hundred fifty-five billion, four hundred eleven million, one hundred twenty-five thousand, two hundred fifty".