136220725 has 12 divisors (see below), whose sum is σ = 169071520. Its totient is φ = 108874800.

The previous prime is 136220713. The next prime is 136220741. The reversal of 136220725 is 527022631.

It is not a de Polignac number, because 136220725 - 2⁷ = 136220597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136220693 and 136220702.

It is a congruent number.

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, 36496 + ... + 40054.

Almost surely, 2^136220725 is an apocalyptic number.

It is an amenable number.

136220725 is a deficient number, since it is larger than the sum of its proper divisors (32850795).

136220725 is a wasteful number, since it uses less digits than its factorization.

136220725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5100 (or 5095 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 136220725 is about 11671.3634593393. The cubic root of 136220725 is about 514.5343766451.

The spelling of 136220725 in words is "one hundred thirty-six million, two hundred twenty thousand, seven hundred twenty-five".