12505903 has 2 divisors, whose sum is σ = 12505904. Its totient is φ = 12505902.

The previous prime is 12505891. The next prime is 12505939. The reversal of 12505903 is 30950521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12505903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12503903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252951 + 6252952.

It is an arithmetic number, because the mean of its divisors is an integer number (6252952).

Almost surely, 2^12505903 is an apocalyptic number.

12505903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505903 is an equidigital number, since it uses as much as digits as its factorization.

12505903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 12505903 is about 3536.3686176642. The cubic root of 12505903 is about 232.1159683300.

The spelling of 12505903 in words is "twelve million, five hundred five thousand, nine hundred three".