25681463 has 2 divisors, whose sum is σ = 25681464. Its totient is φ = 25681462.

The previous prime is 25681459. The next prime is 25681489. The reversal of 25681463 is 36418652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25681463 - 2² = 25681459 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25681063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12840731 + 12840732.

It is an arithmetic number, because the mean of its divisors is an integer number (12840732).

Almost surely, 2^25681463 is an apocalyptic number.

25681463 is a deficient number, since it is larger than the sum of its proper divisors (1).

25681463 is an equidigital number, since it uses as much as digits as its factorization.

25681463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 25681463 is about 5067.6881316829. The cubic root of 25681463 is about 295.0348058138.

The spelling of 25681463 in words is "twenty-five million, six hundred eighty-one thousand, four hundred sixty-three".