25452040 has 16 divisors (see below), whose sum is σ = 57267180. Its totient is φ = 10180800.

The previous prime is 25452029. The next prime is 25452059. The reversal of 25452040 is 4025452.

It can be written as a sum of positive squares in 2 ways, for example, as 25421764 + 30276 = 5042^2 + 174^2 .

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, 318111 + ... + 318190.

Almost surely, 2^25452040 is an apocalyptic number.

25452040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25452040 is an abundant number, since it is smaller than the sum of its proper divisors (31815140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25452040 is a wasteful number, since it uses less digits than its factorization.

25452040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636312 (or 636308 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25452040 is about 5045.0014866202. The cubic root of 25452040 is about 294.1536211057.

Adding to 25452040 its reverse (4025452), we get a palindrome (29477492).

The spelling of 25452040 in words is "twenty-five million, four hundred fifty-two thousand, forty".