25541240 has 32 divisors (see below), whose sum is σ = 58261680. Its totient is φ = 10075392.

The previous prime is 25541209. The next prime is 25541251. The reversal of 25541240 is 4214552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1454 + ... + 7293.

Almost surely, 2^25541240 is an apocalyptic number.

25541240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25541240 is an abundant number, since it is smaller than the sum of its proper divisors (32720440).

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

25541240 is a wasteful number, since it uses less digits than its factorization.

25541240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831 (or 8827 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 25541240 is about 5053.8341880200. The cubic root of 25541240 is about 294.4968537170.

Adding to 25541240 its reverse (4214552), we get a palindrome (29755792).

The spelling of 25541240 in words is "twenty-five million, five hundred forty-one thousand, two hundred forty".