136425661 has 2 divisors, whose sum is σ = 136425662. Its totient is φ = 136425660.

The previous prime is 136425617. The next prime is 136425677. The reversal of 136425661 is 166524631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136165561 + 260100 = 11669^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 136425661 - 2⁷ = 136425533 is a prime.

It is a super-2 number, since 2×136425661² = 37223921958573842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136425361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68212830 + 68212831.

It is an arithmetic number, because the mean of its divisors is an integer number (68212831).

Almost surely, 2^136425661 is an apocalyptic number.

It is an amenable number.

136425661 is a deficient number, since it is larger than the sum of its proper divisors (1).

136425661 is an equidigital number, since it uses as much as digits as its factorization.

136425661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 136425661 is about 11680.1395967685. The cubic root of 136425661 is about 514.7922761724.

The spelling of 136425661 in words is "one hundred thirty-six million, four hundred twenty-five thousand, six hundred sixty-one".