125724799 has 2 divisors, whose sum is σ = 125724800. Its totient is φ = 125724798.

The previous prime is 125724769. The next prime is 125724803. The reversal of 125724799 is 997427521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125724799 - 2¹³ = 125716607 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125724719) 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 as a sum of consecutive naturals, namely, 62862399 + 62862400.

It is an arithmetic number, because the mean of its divisors is an integer number (62862400).

Almost surely, 2^125724799 is an apocalyptic number.

125724799 is a deficient number, since it is larger than the sum of its proper divisors (1).

125724799 is an equidigital number, since it uses as much as digits as its factorization.

125724799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 125724799 is about 11212.7070326483. The cubic root of 125724799 is about 500.9645368077.

It can be divided in two parts, 12572 and 4799, that added together give a palindrome (17371).

The spelling of 125724799 in words is "one hundred twenty-five million, seven hundred twenty-four thousand, seven hundred ninety-nine".