25473887 has 2 divisors, whose sum is σ = 25473888. Its totient is φ = 25473886.

The previous prime is 25473883. The next prime is 25473893. The reversal of 25473887 is 78837452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25473887 - 2² = 25473883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25473881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12736943 + 12736944.

It is an arithmetic number, because the mean of its divisors is an integer number (12736944).

Almost surely, 2^25473887 is an apocalyptic number.

25473887 is a deficient number, since it is larger than the sum of its proper divisors (1).

25473887 is an equidigital number, since it uses as much as digits as its factorization.

25473887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 44.

The square root of 25473887 is about 5047.1662346311. The cubic root of 25473887 is about 294.2377602202.

The spelling of 25473887 in words is "twenty-five million, four hundred seventy-three thousand, eight hundred eighty-seven".