125784563 has 2 divisors, whose sum is σ = 125784564. Its totient is φ = 125784562.

The previous prime is 125784557. The next prime is 125784587. The reversal of 125784563 is 365487521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125784563 - 2⁶ = 125784499 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125784563.

It is not a weakly prime, because it can be changed into another prime (125784163) 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, 62892281 + 62892282.

It is an arithmetic number, because the mean of its divisors is an integer number (62892282).

Almost surely, 2^125784563 is an apocalyptic number.

125784563 is a deficient number, since it is larger than the sum of its proper divisors (1).

125784563 is an equidigital number, since it uses as much as digits as its factorization.

125784563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 125784563 is about 11215.3717281239. The cubic root of 125784563 is about 501.0439030162.

The spelling of 125784563 in words is "one hundred twenty-five million, seven hundred eighty-four thousand, five hundred sixty-three".