25930631 has 2 divisors, whose sum is σ = 25930632. Its totient is φ = 25930630.

The previous prime is 25930613. The next prime is 25930643. The reversal of 25930631 is 13603952.

Together with previous prime (25930613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25930631 is a prime.

It is a super-2 number, since 2×25930631² = 1344795248116322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25930594 and 25930603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25930651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12965315 + 12965316.

It is an arithmetic number, because the mean of its divisors is an integer number (12965316).

Almost surely, 2^25930631 is an apocalyptic number.

25930631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25930631 is an equidigital number, since it uses as much as digits as its factorization.

25930631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 25930631 is about 5092.2127803147. The cubic root of 25930631 is about 295.9859037297.

The spelling of 25930631 in words is "twenty-five million, nine hundred thirty thousand, six hundred thirty-one".