25484638 has 16 divisors (see below), whose sum is σ = 40178160. Its totient is φ = 12108096.

The previous prime is 25484633. The next prime is 25484647. The reversal of 25484638 is 83648452.

It is a self number, because there is not a number n which added to its sum of digits gives 25484638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25484633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823 + ... + 7186.

It is an arithmetic number, because the mean of its divisors is an integer number (2511135).

Almost surely, 2^25484638 is an apocalyptic number.

25484638 is a deficient number, since it is larger than the sum of its proper divisors (14693522).

25484638 is a wasteful number, since it uses less digits than its factorization.

25484638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8091.

The product of its digits is 184320, while the sum is 40.

The square root of 25484638 is about 5048.2311753722. The cubic root of 25484638 is about 294.2791477692.

The spelling of 25484638 in words is "twenty-five million, four hundred eighty-four thousand, six hundred thirty-eight".