1125205521312 has 48 divisors (see below), whose sum is σ = 2953924962912. Its totient is φ = 375035431680.

The previous prime is 1125205521299. The next prime is 1125205521367. The reversal of 1125205521312 is 2131255025211.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1125205521312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589762 + ... + 1611902.

It is an arithmetic number, because the mean of its divisors is an integer number (61540103394).

Almost surely, 2^{1125205521312} is an apocalyptic number.

1125205521312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1125205521312 is an abundant number, since it is smaller than the sum of its proper divisors (1828719441600).

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

1125205521312 is a wasteful number, since it uses less digits than its factorization.

1125205521312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033621 (or 1033613 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 1125205521312 in words is "one trillion, one hundred twenty-five billion, two hundred five million, five hundred twenty-one thousand, three hundred twelve".