1136725681 has 16 divisors (see below), whose sum is σ = 1402417408. Its totient is φ = 897220800.

The previous prime is 1136725679. The next prime is 1136725699. The reversal of 1136725681 is 1865276311.

It is a happy number.

It is not a de Polignac number, because 1136725681 - 2¹ = 1136725679 is a prime.

It is a super-2 number, since 2×1136725681² = 2584290547689827522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1136725781) 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 15 ways as a sum of consecutive naturals, for example, 23476 + ... + 53146.

It is an arithmetic number, because the mean of its divisors is an integer number (87651088).

Almost surely, 2^1136725681 is an apocalyptic number.

It is an amenable number.

1136725681 is a deficient number, since it is larger than the sum of its proper divisors (265691727).

1136725681 is a wasteful number, since it uses less digits than its factorization.

1136725681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30112.

The product of its digits is 60480, while the sum is 40.

The square root of 1136725681 is about 33715.3626852804. The cubic root of 1136725681 is about 1043.6428222935.

The spelling of 1136725681 in words is "one billion, one hundred thirty-six million, seven hundred twenty-five thousand, six hundred eighty-one".