25776239 has 2 divisors, whose sum is σ = 25776240. Its totient is φ = 25776238.

The previous prime is 25776229. The next prime is 25776241. The reversal of 25776239 is 93267752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25776239 - 2¹² = 25772143 is a prime.

Together with 25776241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25776196 and 25776205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25776229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12888119 + 12888120.

It is an arithmetic number, because the mean of its divisors is an integer number (12888120).

Almost surely, 2^25776239 is an apocalyptic number.

25776239 is a deficient number, since it is larger than the sum of its proper divisors (1).

25776239 is an equidigital number, since it uses as much as digits as its factorization.

25776239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 158760, while the sum is 41.

The square root of 25776239 is about 5077.0305297487. The cubic root of 25776239 is about 295.3972967336.

The spelling of 25776239 in words is "twenty-five million, seven hundred seventy-six thousand, two hundred thirty-nine".