25381903 has 4 divisors (see below), whose sum is σ = 26485488. Its totient is φ = 24278320.

The previous prime is 25381897. The next prime is 25381913. The reversal of 25381903 is 30918352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25381903 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25381913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551758 + ... + 551803.

It is an arithmetic number, because the mean of its divisors is an integer number (6621372).

Almost surely, 2^25381903 is an apocalyptic number.

25381903 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25381903 is a deficient number, since it is larger than the sum of its proper divisors (1103585).

25381903 is a wasteful number, since it uses less digits than its factorization.

25381903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103584.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 25381903 is about 5038.0455535852. The cubic root of 25381903 is about 293.8831773971.

The spelling of 25381903 in words is "twenty-five million, three hundred eighty-one thousand, nine hundred three".