1131761825 has 24 divisors (see below), whose sum is σ = 1502682840. Its totient is φ = 842547200.

The previous prime is 1131761767. The next prime is 1131761861. The reversal of 1131761825 is 5281671311.

It can be written as a sum of positive squares in 12 ways, for example, as 244734736 + 887027089 = 15644^2 + 29783^2 .

It is not a de Polignac number, because 1131761825 - 2¹⁰ = 1131760801 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 22865 + ... + 52785.

It is an arithmetic number, because the mean of its divisors is an integer number (62611785).

Almost surely, 2^1131761825 is an apocalyptic number.

It is an amenable number.

1131761825 is a deficient number, since it is larger than the sum of its proper divisors (370921015).

1131761825 is a wasteful number, since it uses less digits than its factorization.

1131761825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30037 (or 30032 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 1131761825 is about 33641.6679877797. The cubic root of 1131761825 is about 1042.1214784759.

The spelling of 1131761825 in words is "one billion, one hundred thirty-one million, seven hundred sixty-one thousand, eight hundred twenty-five".