25129903 has 2 divisors, whose sum is σ = 25129904. Its totient is φ = 25129902.

The previous prime is 25129879. The next prime is 25129939. The reversal of 25129903 is 30992152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25129903 - 2¹³ = 25121711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25129943) 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, 12564951 + 12564952.

It is an arithmetic number, because the mean of its divisors is an integer number (12564952).

Almost surely, 2^25129903 is an apocalyptic number.

25129903 is a deficient number, since it is larger than the sum of its proper divisors (1).

25129903 is an equidigital number, since it uses as much as digits as its factorization.

25129903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 25129903 is about 5012.9734689104. The cubic root of 25129903 is about 292.9073507187.

The spelling of 25129903 in words is "twenty-five million, one hundred twenty-nine thousand, nine hundred three".