25260839 has 2 divisors, whose sum is σ = 25260840. Its totient is φ = 25260838.

The previous prime is 25260799. The next prime is 25260841. The reversal of 25260839 is 93806252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25260839 is a prime.

Together with 25260841, 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 = 25260799 and 25260808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25260869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12630419 + 12630420.

It is an arithmetic number, because the mean of its divisors is an integer number (12630420).

Almost surely, 2^25260839 is an apocalyptic number.

25260839 is a deficient number, since it is larger than the sum of its proper divisors (1).

25260839 is an equidigital number, since it uses as much as digits as its factorization.

25260839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 25260839 is about 5026.0162156523. The cubic root of 25260839 is about 293.4151879289.

The spelling of 25260839 in words is "twenty-five million, two hundred sixty thousand, eight hundred thirty-nine".