137425591 has 4 divisors (see below), whose sum is σ = 137449192. Its totient is φ = 137401992.

The previous prime is 137425583. The next prime is 137425601. The reversal of 137425591 is 195524731.

137425591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 137425591 - 2³ = 137425583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137425591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137425091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3880 + ... + 17026.

It is an arithmetic number, because the mean of its divisors is an integer number (34362298).

Almost surely, 2^137425591 is an apocalyptic number.

137425591 is a deficient number, since it is larger than the sum of its proper divisors (23601).

137425591 is a wasteful number, since it uses less digits than its factorization.

137425591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23600.

The product of its digits is 37800, while the sum is 37.

The square root of 137425591 is about 11722.8661597751. The cubic root of 137425591 is about 516.0469367696.

The spelling of 137425591 in words is "one hundred thirty-seven million, four hundred twenty-five thousand, five hundred ninety-one".