25427887 has 2 divisors, whose sum is σ = 25427888. Its totient is φ = 25427886.

The previous prime is 25427881. The next prime is 25427951. The reversal of 25427887 is 78872452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25427887 - 2¹¹ = 25425839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25427881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12713943 + 12713944.

It is an arithmetic number, because the mean of its divisors is an integer number (12713944).

Almost surely, 2^25427887 is an apocalyptic number.

25427887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25427887 is an equidigital number, since it uses as much as digits as its factorization.

25427887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 43.

The square root of 25427887 is about 5042.6071629664. The cubic root of 25427887 is about 294.0605448604.

The spelling of 25427887 in words is "twenty-five million, four hundred twenty-seven thousand, eight hundred eighty-seven".