25481607 has 4 divisors (see below), whose sum is σ = 33975480. Its totient is φ = 16987736.

The previous prime is 25481587. The next prime is 25481611. The reversal of 25481607 is 70618452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25481607 - 2⁶ = 25481543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4246932 + ... + 4246937.

It is an arithmetic number, because the mean of its divisors is an integer number (8493870).

Almost surely, 2^25481607 is an apocalyptic number.

25481607 is a deficient number, since it is larger than the sum of its proper divisors (8493873).

25481607 is an equidigital number, since it uses as much as digits as its factorization.

25481607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8493872.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 25481607 is about 5047.9309622854. The cubic root of 25481607 is about 294.2674806692.

The spelling of 25481607 in words is "twenty-five million, four hundred eighty-one thousand, six hundred seven".