25823517403 has 2 divisors, whose sum is σ = 25823517404. Its totient is φ = 25823517402.

The previous prime is 25823517389. The next prime is 25823517479. The reversal of 25823517403 is 30471532852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25823517403 - 2²⁵ = 25789962971 is a prime.

It is not a weakly prime, because it can be changed into another prime (25823511403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12911758701 + 12911758702.

It is an arithmetic number, because the mean of its divisors is an integer number (12911758702).

Almost surely, 2^25823517403 is an apocalyptic number.

25823517403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25823517403 is an equidigital number, since it uses as much as digits as its factorization.

25823517403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 25823517403 in words is "twenty-five billion, eight hundred twenty-three million, five hundred seventeen thousand, four hundred three".