1149255691125 has 64 divisors (see below), whose sum is σ = 1991711255040. Its totient is φ = 587970432000.

The previous prime is 1149255691093. The next prime is 1149255691127. The reversal of 1149255691125 is 5211965529411.

It is a happy number.

It is not a de Polignac number, because 1149255691125 - 2⁵ = 1149255691093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149255691127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 401821 + ... + 1568429.

It is an arithmetic number, because the mean of its divisors is an integer number (31120488360).

Almost surely, 2^{1149255691125} is an apocalyptic number.

1149255691125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1149255691125 is a deficient number, since it is larger than the sum of its proper divisors (842455563915).

1149255691125 is a wasteful number, since it uses less digits than its factorization.

1149255691125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166735 (or 1166725 counting only the distinct ones).

The product of its digits is 972000, while the sum is 51.

The spelling of 1149255691125 in words is "one trillion, one hundred forty-nine billion, two hundred fifty-five million, six hundred ninety-one thousand, one hundred twenty-five".