125782799 has 2 divisors, whose sum is σ = 125782800. Its totient is φ = 125782798.

The previous prime is 125782781. The next prime is 125782807. The reversal of 125782799 is 997287521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125782799 - 2²⁰ = 124734223 is a prime.

It is a Sophie Germain 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 (125782729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62891399 + 62891400.

It is an arithmetic number, because the mean of its divisors is an integer number (62891400).

Almost surely, 2^125782799 is an apocalyptic number.

125782799 is a deficient number, since it is larger than the sum of its proper divisors (1).

125782799 is an equidigital number, since it uses as much as digits as its factorization.

125782799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 125782799 is about 11215.2930857825. The cubic root of 125782799 is about 501.0415607956.

The spelling of 125782799 in words is "one hundred twenty-five million, seven hundred eighty-two thousand, seven hundred ninety-nine".