136925749 has 2 divisors, whose sum is σ = 136925750. Its totient is φ = 136925748.

The previous prime is 136925687. The next prime is 136925777. The reversal of 136925749 is 947529631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134397649 + 2528100 = 11593^2 + 1590^2 .

It is an emirp because it is prime and its reverse (947529631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136925749 - 2¹¹ = 136923701 is a prime.

It is a super-2 number, since 2×136925749² = 37497321478422002, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136925699 and 136925708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136925149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68462874 + 68462875.

It is an arithmetic number, because the mean of its divisors is an integer number (68462875).

Almost surely, 2^136925749 is an apocalyptic number.

It is an amenable number.

136925749 is a deficient number, since it is larger than the sum of its proper divisors (1).

136925749 is an equidigital number, since it uses as much as digits as its factorization.

136925749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 136925749 is about 11701.5276353133. The cubic root of 136925749 is about 515.4205243431.

The spelling of 136925749 in words is "one hundred thirty-six million, nine hundred twenty-five thousand, seven hundred forty-nine".