25753240 has 32 divisors (see below), whose sum is σ = 58650480. Its totient is φ = 10175872.

The previous prime is 25753213. The next prime is 25753243. The reversal of 25753240 is 4235752.

It is a junction number, because it is equal to n+sod(n) for n = 25753199 and 25753208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25753243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559 + ... + 7198.

Almost surely, 2^25753240 is an apocalyptic number.

25753240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25753240 is an abundant number, since it is smaller than the sum of its proper divisors (32897240).

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

25753240 is a wasteful number, since it uses less digits than its factorization.

25753240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7851 (or 7847 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 25753240 is about 5074.7650191905. The cubic root of 25753240 is about 295.3094139353.

Adding to 25753240 its reverse (4235752), we get a palindrome (29988992).

The spelling of 25753240 in words is "twenty-five million, seven hundred fifty-three thousand, two hundred forty".