25603023403 has 2 divisors, whose sum is σ = 25603023404. Its totient is φ = 25603023402.

The previous prime is 25603023401. The next prime is 25603023499. The reversal of 25603023403 is 30432030652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25603023403 - 2¹ = 25603023401 is a prime.

Together with 25603023401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25603023401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12801511701 + 12801511702.

It is an arithmetic number, because the mean of its divisors is an integer number (12801511702).

Almost surely, 2^25603023403 is an apocalyptic number.

25603023403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25603023403 is an equidigital number, since it uses as much as digits as its factorization.

25603023403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 28.

The spelling of 25603023403 in words is "twenty-five billion, six hundred three million, twenty-three thousand, four hundred three".