25287493 has 16 divisors (see below), whose sum is σ = 31651200. Its totient is φ = 19627200.

The previous prime is 25287467. The next prime is 25287503. The reversal of 25287493 is 39478252.

It is a cyclic number.

It is not a de Polignac number, because 25287493 - 2²¹ = 23190341 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26403 + ... + 27343.

It is an arithmetic number, because the mean of its divisors is an integer number (1978200).

Almost surely, 2^25287493 is an apocalyptic number.

It is an amenable number.

25287493 is a deficient number, since it is larger than the sum of its proper divisors (6363707).

25287493 is a wasteful number, since it uses less digits than its factorization.

25287493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308.

The product of its digits is 120960, while the sum is 40.

The square root of 25287493 is about 5028.6671196252. The cubic root of 25287493 is about 293.5183507647.

The spelling of 25287493 in words is "twenty-five million, two hundred eighty-seven thousand, four hundred ninety-three".