125281723 has 4 divisors (see below), whose sum is σ = 143179120. Its totient is φ = 107384328.

The previous prime is 125281679. The next prime is 125281753. The reversal of 125281723 is 327182521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327182521 = 23 ⋅14225327.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125281723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125281753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8948688 + ... + 8948701.

It is an arithmetic number, because the mean of its divisors is an integer number (35794780).

Almost surely, 2^125281723 is an apocalyptic number.

125281723 is a deficient number, since it is larger than the sum of its proper divisors (17897397).

125281723 is an equidigital number, since it uses as much as digits as its factorization.

125281723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17897396.

The product of its digits is 6720, while the sum is 31.

The square root of 125281723 is about 11192.9318321877. The cubic root of 125281723 is about 500.3753488227.

The spelling of 125281723 in words is "one hundred twenty-five million, two hundred eighty-one thousand, seven hundred twenty-three".