25421267 has 2 divisors, whose sum is σ = 25421268. Its totient is φ = 25421266.

The previous prime is 25421261. The next prime is 25421281. The reversal of 25421267 is 76212452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25421267 - 2⁴ = 25421251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25421261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12710633 + 12710634.

It is an arithmetic number, because the mean of its divisors is an integer number (12710634).

Almost surely, 2^25421267 is an apocalyptic number.

25421267 is a deficient number, since it is larger than the sum of its proper divisors (1).

25421267 is an equidigital number, since it uses as much as digits as its factorization.

25421267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 25421267 is about 5041.9507137615. The cubic root of 25421267 is about 294.0350236709.

The spelling of 25421267 in words is "twenty-five million, four hundred twenty-one thousand, two hundred sixty-seven".