1135981925 has 24 divisors (see below), whose sum is σ = 1521985920. Its totient is φ = 836107200.

The previous prime is 1135981921. The next prime is 1135981927. The reversal of 1135981925 is 5291895311.

It is not a de Polignac number, because 1135981925 - 2² = 1135981921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135981921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95456 + ... + 106694.

It is an arithmetic number, because the mean of its divisors is an integer number (63416080).

Almost surely, 2^1135981925 is an apocalyptic number.

It is an amenable number.

1135981925 is a deficient number, since it is larger than the sum of its proper divisors (386003995).

1135981925 is a wasteful number, since it uses less digits than its factorization.

1135981925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11573 (or 11568 counting only the distinct ones).

The product of its digits is 97200, while the sum is 44.

The square root of 1135981925 is about 33704.3309531579. The cubic root of 1135981925 is about 1043.4151552385.

The spelling of 1135981925 in words is "one billion, one hundred thirty-five million, nine hundred eighty-one thousand, nine hundred twenty-five".