125287879 has 2 divisors, whose sum is σ = 125287880. Its totient is φ = 125287878.

The previous prime is 125287849. The next prime is 125287889. The reversal of 125287879 is 978782521.

It is a strong prime.

It is an emirp because it is prime and its reverse (978782521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125287879 - 2⁵ = 125287847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125287849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62643939 + 62643940.

It is an arithmetic number, because the mean of its divisors is an integer number (62643940).

Almost surely, 2^125287879 is an apocalyptic number.

125287879 is a deficient number, since it is larger than the sum of its proper divisors (1).

125287879 is an equidigital number, since it uses as much as digits as its factorization.

125287879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 49.

The square root of 125287879 is about 11193.2068237838. The cubic root of 125287879 is about 500.3835443789.

The spelling of 125287879 in words is "one hundred twenty-five million, two hundred eighty-seven thousand, eight hundred seventy-nine".