125512903 has 2 divisors, whose sum is σ = 125512904. Its totient is φ = 125512902.

The previous prime is 125512901. The next prime is 125512939. The reversal of 125512903 is 309215521.

It is a weak prime.

It is an emirp because it is prime and its reverse (309215521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125512903 - 2¹ = 125512901 is a prime.

Together with 125512901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125512901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62756451 + 62756452.

It is an arithmetic number, because the mean of its divisors is an integer number (62756452).

Almost surely, 2^125512903 is an apocalyptic number.

125512903 is a deficient number, since it is larger than the sum of its proper divisors (1).

125512903 is an equidigital number, since it uses as much as digits as its factorization.

125512903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 125512903 is about 11203.2541254762. The cubic root of 125512903 is about 500.6829374349.

The spelling of 125512903 in words is "one hundred twenty-five million, five hundred twelve thousand, nine hundred three".