125738911 has 4 divisors (see below), whose sum is σ = 126148792. Its totient is φ = 125329032.

The previous prime is 125738813. The next prime is 125738917. The reversal of 125738911 is 119837521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125738911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125738917) 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, 204480 + ... + 205093.

It is an arithmetic number, because the mean of its divisors is an integer number (31537198).

Almost surely, 2^125738911 is an apocalyptic number.

125738911 is a deficient number, since it is larger than the sum of its proper divisors (409881).

125738911 is an equidigital number, since it uses as much as digits as its factorization.

125738911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409880.

The product of its digits is 15120, while the sum is 37.

The square root of 125738911 is about 11213.3363010301. The cubic root of 125738911 is about 500.9832797211.

The spelling of 125738911 in words is "one hundred twenty-five million, seven hundred thirty-eight thousand, nine hundred eleven".