125738641 has 4 divisors (see below), whose sum is σ = 143701312. Its totient is φ = 107775972.

The previous prime is 125738623. The next prime is 125738653. The reversal of 125738641 is 146837521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146837521 = 103 ⋅1425607.

It is a cyclic number.

It is not a de Polignac number, because 125738641 - 2¹¹ = 125736593 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 125738641.

It is not an unprimeable number, because it can be changed into a prime (125738611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8981325 + ... + 8981338.

It is an arithmetic number, because the mean of its divisors is an integer number (35925328).

Almost surely, 2^125738641 is an apocalyptic number.

It is an amenable number.

125738641 is a deficient number, since it is larger than the sum of its proper divisors (17962671).

125738641 is an equidigital number, since it uses as much as digits as its factorization.

125738641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17962670.

The product of its digits is 40320, while the sum is 37.

The square root of 125738641 is about 11213.3242617878. The cubic root of 125738641 is about 500.9829211326.

The spelling of 125738641 in words is "one hundred twenty-five million, seven hundred thirty-eight thousand, six hundred forty-one".