125726719 has 4 divisors (see below), whose sum is σ = 126971640. Its totient is φ = 124481800.

The previous prime is 125726701. The next prime is 125726723. The reversal of 125726719 is 917627521.

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-125726719 is a prime.

It is a super-2 number, since 2×125726719² = 31614415741009922, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125726519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622309 + ... + 622510.

It is an arithmetic number, because the mean of its divisors is an integer number (31742910).

Almost surely, 2^125726719 is an apocalyptic number.

125726719 is a deficient number, since it is larger than the sum of its proper divisors (1244921).

125726719 is a wasteful number, since it uses less digits than its factorization.

125726719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244920.

The product of its digits is 52920, while the sum is 40.

The square root of 125726719 is about 11212.7926494696. The cubic root of 125726719 is about 500.9670869464.

It can be divided in two parts, 12572 and 6719, that added together give a palindrome (19291).

The spelling of 125726719 in words is "one hundred twenty-five million, seven hundred twenty-six thousand, seven hundred nineteen".