1131925145 has 8 divisors (see below), whose sum is σ = 1462795656. Its totient is φ = 835883136.

The previous prime is 1131925141. The next prime is 1131925147. The reversal of 1131925145 is 5415291311.

It can be written as a sum of positive squares in 4 ways, for example, as 257185369 + 874739776 = 16037^2 + 29576^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131925145 - 2² = 1131925141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131925141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8707052 + ... + 8707181.

It is an arithmetic number, because the mean of its divisors is an integer number (182849457).

Almost surely, 2^1131925145 is an apocalyptic number.

It is an amenable number.

1131925145 is a deficient number, since it is larger than the sum of its proper divisors (330870511).

1131925145 is a wasteful number, since it uses less digits than its factorization.

1131925145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17414251.

The product of its digits is 5400, while the sum is 32.

The square root of 1131925145 is about 33644.0952471604. The cubic root of 1131925145 is about 1042.1716041855.

The spelling of 1131925145 in words is "one billion, one hundred thirty-one million, nine hundred twenty-five thousand, one hundred forty-five".