136515225 has 108 divisors (see below), whose sum is σ = 289533552. Its totient is φ = 56548800.

The previous prime is 136515193. The next prime is 136515229. The reversal of 136515225 is 522515631.

It is a happy number.

It is not a de Polignac number, because 136515225 - 2⁵ = 136515193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136515192 and 136515201.

It is not an unprimeable number, because it can be changed into a prime (136515229) 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 in 107 ways as a sum of consecutive naturals, for example, 444522 + ... + 444828.

Almost surely, 2^136515225 is an apocalyptic number.

136515225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136515225 is an abundant number, since it is smaller than the sum of its proper divisors (153018327).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136515225 is a wasteful number, since it uses less digits than its factorization.

136515225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 333 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 136515225 is about 11683.9729972300. The cubic root of 136515225 is about 514.9049059347.

The spelling of 136515225 in words is "one hundred thirty-six million, five hundred fifteen thousand, two hundred twenty-five".