25280693903 has 6 divisors (see below), whose sum is σ = 26681286744. Its totient is φ = 23950130724.

The previous prime is 25280693873. The next prime is 25280693917. The reversal of 25280693903 is 30939608252.

It is a happy number.

It is not a de Polignac number, because 25280693903 - 2¹⁶ = 25280628367 is a prime.

It is a super-2 number, since 2×25280693903² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280693983) 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 in 5 ways as a sum of consecutive naturals, for example, 35014451 + ... + 35015172.

It is an arithmetic number, because the mean of its divisors is an integer number (4446881124).

Almost surely, 2^25280693903 is an apocalyptic number.

25280693903 is a deficient number, since it is larger than the sum of its proper divisors (1400592841).

25280693903 is an equidigital number, since it uses as much as digits as its factorization.

25280693903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70029661 (or 70029642 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 25280693903 in words is "twenty-five billion, two hundred eighty million, six hundred ninety-three thousand, nine hundred three".