136538325 has 192 divisors, whose sum is σ = 325693440. Its totient is φ = 54432000.

The previous prime is 136538321. The next prime is 136538329. The reversal of 136538325 is 523835631.

It is an interprime number because it is at equal distance from previous prime (136538321) and next prime (136538329).

It is not a de Polignac number, because 136538325 - 2² = 136538321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136538325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136538321) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1923040 + ... + 1923110.

It is an arithmetic number, because the mean of its divisors is an integer number (1696320).

Almost surely, 2^136538325 is an apocalyptic number.

136538325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136538325 is an abundant number, since it is smaller than the sum of its proper divisors (189155115).

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

136538325 is a wasteful number, since it uses less digits than its factorization.

136538325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 134 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 136538325 is about 11684.9614890251. The cubic root of 136538325 is about 514.9339469751.

The spelling of 136538325 in words is "one hundred thirty-six million, five hundred thirty-eight thousand, three hundred twenty-five".