125812459 has 2 divisors, whose sum is σ = 125812460. Its totient is φ = 125812458.

The previous prime is 125812451. The next prime is 125812493. The reversal of 125812459 is 954218521.

It is a weak prime.

It is an emirp because it is prime and its reverse (954218521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125812459 - 2³ = 125812451 is a prime.

It is not a weakly prime, because it can be changed into another prime (125812451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62906229 + 62906230.

It is an arithmetic number, because the mean of its divisors is an integer number (62906230).

Almost surely, 2^125812459 is an apocalyptic number.

125812459 is a deficient number, since it is larger than the sum of its proper divisors (1).

125812459 is an equidigital number, since it uses as much as digits as its factorization.

125812459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 37.

The square root of 125812459 is about 11216.6153094416. The cubic root of 125812459 is about 501.0809401196.

The spelling of 125812459 in words is "one hundred twenty-five million, eight hundred twelve thousand, four hundred fifty-nine".