25481487 has 8 divisors (see below), whose sum is σ = 35973936. Its totient is φ = 15988352.

The previous prime is 25481429. The next prime is 25481497. The reversal of 25481487 is 78418452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25481487 - 2⁸ = 25481231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481497) 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 7 ways as a sum of consecutive naturals, for example, 249768 + ... + 249869.

It is an arithmetic number, because the mean of its divisors is an integer number (4496742).

Almost surely, 2^25481487 is an apocalyptic number.

25481487 is a deficient number, since it is larger than the sum of its proper divisors (10492449).

25481487 is a wasteful number, since it uses less digits than its factorization.

25481487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499657.

The product of its digits is 71680, while the sum is 39.

The square root of 25481487 is about 5047.9190762135. The cubic root of 25481487 is about 294.2670187393.

The spelling of 25481487 in words is "twenty-five million, four hundred eighty-one thousand, four hundred eighty-seven".