136720425 has 12 divisors (see below), whose sum is σ = 226044560. Its totient is φ = 72917520.

The previous prime is 136720411. The next prime is 136720469. The reversal of 136720425 is 524027631.

It is not a de Polignac number, because 136720425 - 2⁶ = 136720361 is a prime.

It is a super-2 number, since 2×136720425² = 37384949224361250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136720392 and 136720401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 911395 + ... + 911544.

Almost surely, 2^136720425 is an apocalyptic number.

136720425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136720425 is a deficient number, since it is larger than the sum of its proper divisors (89324135).

136720425 is a wasteful number, since it uses less digits than its factorization.

136720425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822952 (or 1822947 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 136720425 is about 11692.7509594620. The cubic root of 136720425 is about 515.1627662855.

The spelling of 136720425 in words is "one hundred thirty-six million, seven hundred twenty thousand, four hundred twenty-five".