137425891 has 4 divisors (see below), whose sum is σ = 140777784. Its totient is φ = 134074000.

The previous prime is 137425861. The next prime is 137425901. The reversal of 137425891 is 198524731.

137425891 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.

It is a cyclic number.

It is not a de Polignac number, because 137425891 - 2¹⁹ = 136901603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137425861) 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, 1675885 + ... + 1675966.

It is an arithmetic number, because the mean of its divisors is an integer number (35194446).

Almost surely, 2^137425891 is an apocalyptic number.

137425891 is a deficient number, since it is larger than the sum of its proper divisors (3351893).

137425891 is an equidigital number, since it uses as much as digits as its factorization.

137425891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351892.

The product of its digits is 60480, while the sum is 40.

The square root of 137425891 is about 11722.8789552737. The cubic root of 137425891 is about 516.0473122794.

The spelling of 137425891 in words is "one hundred thirty-seven million, four hundred twenty-five thousand, eight hundred ninety-one".