25540983803 has 2 divisors, whose sum is σ = 25540983804. Its totient is φ = 25540983802.

The previous prime is 25540983773. The next prime is 25540983817. The reversal of 25540983803 is 30838904552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25540983803 - 2⁸ = 25540983547 is a prime.

It is not a weakly prime, because it can be changed into another prime (25540983823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12770491901 + 12770491902.

It is an arithmetic number, because the mean of its divisors is an integer number (12770491902).

Almost surely, 2^25540983803 is an apocalyptic number.

25540983803 is a deficient number, since it is larger than the sum of its proper divisors (1).

25540983803 is an equidigital number, since it uses as much as digits as its factorization.

25540983803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 25540983803 in words is "twenty-five billion, five hundred forty million, nine hundred eighty-three thousand, eight hundred three".