136940448025 has 6 divisors (see below), whose sum is σ = 169806155582. Its totient is φ = 109552358400.

The previous prime is 136940448013. The next prime is 136940448049. The reversal of 136940448025 is 520844049631.

It can be written as a sum of positive squares in 3 ways, for example, as 13775247424 + 123165200601 = 117368^2 + 350949^2 .

It is not a de Polignac number, because 136940448025 - 2¹⁵ = 136940415257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2738808936 + ... + 2738808985.

Almost surely, 2^136940448025 is an apocalyptic number.

It is an amenable number.

136940448025 is a deficient number, since it is larger than the sum of its proper divisors (32865707557).

136940448025 is an equidigital number, since it uses as much as digits as its factorization.

136940448025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5477617931 (or 5477617926 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 136940448025 in words is "one hundred thirty-six billion, nine hundred forty million, four hundred forty-eight thousand, twenty-five".