25926643 has 2 divisors, whose sum is σ = 25926644. Its totient is φ = 25926642.

The previous prime is 25926613. The next prime is 25926653. The reversal of 25926643 is 34662952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25926643 is a prime.

It is not a weakly prime, because it can be changed into another prime (25926613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12963321 + 12963322.

It is an arithmetic number, because the mean of its divisors is an integer number (12963322).

Almost surely, 2^25926643 is an apocalyptic number.

25926643 is a deficient number, since it is larger than the sum of its proper divisors (1).

25926643 is an equidigital number, since it uses as much as digits as its factorization.

25926643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 25926643 is about 5091.8211869625. The cubic root of 25926643 is about 295.9707292397.

It can be divided in two parts, 25926 and 643, that added together give a square (26569 = 163²).

The spelling of 25926643 in words is "twenty-five million, nine hundred twenty-six thousand, six hundred forty-three".