25726031 has 2 divisors, whose sum is σ = 25726032. Its totient is φ = 25726030.

The previous prime is 25726007. The next prime is 25726037. The reversal of 25726031 is 13062752.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25726031 is a prime.

It is a super-2 number, since 2×25726031² = 1323657342025922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25726037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12863015 + 12863016.

It is an arithmetic number, because the mean of its divisors is an integer number (12863016).

Almost surely, 2^25726031 is an apocalyptic number.

25726031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25726031 is an equidigital number, since it uses as much as digits as its factorization.

25726031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 25726031 is about 5072.0834969468. The cubic root of 25726031 is about 295.2053764722.

Adding to 25726031 its reverse (13062752), we get a palindrome (38788783).

The spelling of 25726031 in words is "twenty-five million, seven hundred twenty-six thousand, thirty-one".