25863402923 has 2 divisors, whose sum is σ = 25863402924. Its totient is φ = 25863402922.

The previous prime is 25863402919. The next prime is 25863402959. The reversal of 25863402923 is 32920436852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25863402923 - 2² = 25863402919 is a prime.

It is a super-2 number, since 2×25863402923² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25863482923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931701461 + 12931701462.

It is an arithmetic number, because the mean of its divisors is an integer number (12931701462).

Almost surely, 2^25863402923 is an apocalyptic number.

25863402923 is a deficient number, since it is larger than the sum of its proper divisors (1).

25863402923 is an equidigital number, since it uses as much as digits as its factorization.

25863402923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 25863402923 in words is "twenty-five billion, eight hundred sixty-three million, four hundred two thousand, nine hundred twenty-three".