1131976725 has 48 divisors (see below), whose sum is σ = 2072248320. Its totient is φ = 540619200.

The previous prime is 1131976721. The next prime is 1131976793. The reversal of 1131976725 is 5276791311.

It is not a de Polignac number, because 1131976725 - 2² = 1131976721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131976721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45036 + ... + 65514.

It is an arithmetic number, because the mean of its divisors is an integer number (43171840).

Almost surely, 2^1131976725 is an apocalyptic number.

1131976725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131976725 is a deficient number, since it is larger than the sum of its proper divisors (940271595).

1131976725 is a wasteful number, since it uses less digits than its factorization.

1131976725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20570 (or 20565 counting only the distinct ones).

The product of its digits is 79380, while the sum is 42.

The square root of 1131976725 is about 33644.8617919587. The cubic root of 1131976725 is about 1042.1874339704.

The spelling of 1131976725 in words is "one billion, one hundred thirty-one million, nine hundred seventy-six thousand, seven hundred twenty-five".