125189747 has 4 divisors (see below), whose sum is σ = 125751360. Its totient is φ = 124628136.

The previous prime is 125189741. The next prime is 125189761. The reversal of 125189747 is 747981521.

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 125189747 - 2¹⁶ = 125124211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125189698 and 125189707.

It is not an unprimeable number, because it can be changed into a prime (125189741) 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, 280472 + ... + 280917.

It is an arithmetic number, because the mean of its divisors is an integer number (31437840).

Almost surely, 2^125189747 is an apocalyptic number.

125189747 is a deficient number, since it is larger than the sum of its proper divisors (561613).

125189747 is an equidigital number, since it uses as much as digits as its factorization.

125189747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561612.

The product of its digits is 141120, while the sum is 44.

The square root of 125189747 is about 11188.8224134625. The cubic root of 125189747 is about 500.2528680939.

The spelling of 125189747 in words is "one hundred twenty-five million, one hundred eighty-nine thousand, seven hundred forty-seven".