1131949025 has 24 divisors (see below), whose sum is σ = 1515170880. Its totient is φ = 836306240.

The previous prime is 1131949019. The next prime is 1131949057. The reversal of 1131949025 is 5209491311.

It is a happy number.

It is not a de Polignac number, because 1131949025 - 2⁴ = 1131949009 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17267 + ... + 50616.

It is an arithmetic number, because the mean of its divisors is an integer number (63132120).

Almost surely, 2^1131949025 is an apocalyptic number.

It is an amenable number.

1131949025 is a deficient number, since it is larger than the sum of its proper divisors (383221855).

1131949025 is a wasteful number, since it uses less digits than its factorization.

1131949025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67945 (or 67940 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1131949025 is about 33644.4501366867. The cubic root of 1131949025 is about 1042.1789329631.

The spelling of 1131949025 in words is "one billion, one hundred thirty-one million, nine hundred forty-nine thousand, twenty-five".