25116823 has 2 divisors, whose sum is σ = 25116824. Its totient is φ = 25116822.

The previous prime is 25116809. The next prime is 25116829. The reversal of 25116823 is 32861152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25116823 - 2¹³ = 25108631 is a prime.

It is a super-2 number, since 2×25116823² = 1261709595226658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25116791 and 25116800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25116829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12558411 + 12558412.

It is an arithmetic number, because the mean of its divisors is an integer number (12558412).

Almost surely, 2^25116823 is an apocalyptic number.

25116823 is a deficient number, since it is larger than the sum of its proper divisors (1).

25116823 is an equidigital number, since it uses as much as digits as its factorization.

25116823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 25116823 is about 5011.6686841809. The cubic root of 25116823 is about 292.8565229187.

Adding to 25116823 its reverse (32861152), we get a palindrome (57977975).

The spelling of 25116823 in words is "twenty-five million, one hundred sixteen thousand, eight hundred twenty-three".