25932778423 has 2 divisors, whose sum is σ = 25932778424. Its totient is φ = 25932778422.

The previous prime is 25932778397. The next prime is 25932778429. The reversal of 25932778423 is 32487723952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25932778423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25932778429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12966389211 + 12966389212.

It is an arithmetic number, because the mean of its divisors is an integer number (12966389212).

Almost surely, 2^25932778423 is an apocalyptic number.

25932778423 is a deficient number, since it is larger than the sum of its proper divisors (1).

25932778423 is an equidigital number, since it uses as much as digits as its factorization.

25932778423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 52.

The spelling of 25932778423 in words is "twenty-five billion, nine hundred thirty-two million, seven hundred seventy-eight thousand, four hundred twenty-three".