136591025 has 12 divisors (see below), whose sum is σ = 171416112. Its totient is φ = 107954640.

The previous prime is 136591001. The next prime is 136591031. The reversal of 136591025 is 520195631.

It is not a de Polignac number, because 136591025 - 2¹⁰ = 136590001 is a prime.

It is a super-2 number, since 2×136591025² = 37314216221101250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136590982 and 136591000.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 30839 + ... + 34988.

It is an arithmetic number, because the mean of its divisors is an integer number (14284676).

Almost surely, 2^136591025 is an apocalyptic number.

It is an amenable number.

136591025 is a deficient number, since it is larger than the sum of its proper divisors (34825087).

136591025 is an equidigital number, since it uses as much as digits as its factorization.

136591025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65920 (or 65915 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 136591025 is about 11687.2163067174. The cubic root of 136591025 is about 515.0001885191. Note that the first 3 decimals are identical.

The spelling of 136591025 in words is "one hundred thirty-six million, five hundred ninety-one thousand, twenty-five".