25943881 has 2 divisors, whose sum is σ = 25943882. Its totient is φ = 25943880.

The previous prime is 25943867. The next prime is 25943899. The reversal of 25943881 is 18834952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25918281 + 25600 = 5091^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 25943881 - 2⁹ = 25943369 is a prime.

It is a super-2 number, since 2×25943881² = 1346169922684322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25943831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12971940 + 12971941.

It is an arithmetic number, because the mean of its divisors is an integer number (12971941).

Almost surely, 2^25943881 is an apocalyptic number.

It is an amenable number.

25943881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25943881 is an equidigital number, since it uses as much as digits as its factorization.

25943881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The square root of 25943881 is about 5093.5136202822. The cubic root of 25943881 is about 296.0363093090.

The spelling of 25943881 in words is "twenty-five million, nine hundred forty-three thousand, eight hundred eighty-one".