1131320778925 has 24 divisors (see below), whose sum is σ = 1448208951552. Its totient is φ = 875789664000.

The previous prime is 1131320778923. The next prime is 1131320778943. The reversal of 1131320778925 is 5298770231311.

It is not a de Polignac number, because 1131320778925 - 2¹ = 1131320778923 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131320778923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10674042 + ... + 10779508.

It is an arithmetic number, because the mean of its divisors is an integer number (60342039648).

Almost surely, 2^{1131320778925} is an apocalyptic number.

It is an amenable number.

1131320778925 is a deficient number, since it is larger than the sum of its proper divisors (316888172627).

1131320778925 is a wasteful number, since it uses less digits than its factorization.

1131320778925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119349 (or 119344 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 1131320778925 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, seven hundred seventy-eight thousand, nine hundred twenty-five".