25448642 has 8 divisors (see below), whose sum is σ = 38221500. Its totient is φ = 12708144.

The previous prime is 25448627. The next prime is 25448653. The reversal of 25448642 is 24684452.

It can be written as a sum of positive squares in 2 ways, for example, as 25391521 + 57121 = 5039^2 + 239^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6017 + ... + 9332.

Almost surely, 2^25448642 is an apocalyptic number.

25448642 is a deficient number, since it is larger than the sum of its proper divisors (12772858).

25448642 is a wasteful number, since it uses less digits than its factorization.

25448642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16180.

The product of its digits is 61440, while the sum is 35.

The square root of 25448642 is about 5044.6647064002. The cubic root of 25448642 is about 294.1405300988.

The spelling of 25448642 in words is "twenty-five million, four hundred forty-eight thousand, six hundred forty-two".