25001240 has 32 divisors (see below), whose sum is σ = 61367760. Its totient is φ = 9091200.

The previous prime is 25001239. The next prime is 25001243. The reversal of 25001240 is 4210052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25001243) 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, 27971 + ... + 28850.

Almost surely, 2^25001240 is an apocalyptic number.

25001240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25001240 is an abundant number, since it is smaller than the sum of its proper divisors (36366520).

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

25001240 is a wasteful number, since it uses less digits than its factorization.

25001240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56843 (or 56839 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 25001240 is about 5000.1239984624. The cubic root of 25001240 is about 292.4066081174.

Adding to 25001240 its reverse (4210052), we get a palindrome (29211292).

It can be divided in two parts, 250012 and 40, that added together give a palindrome (250052).

The spelling of 25001240 in words is "twenty-five million, one thousand, two hundred forty".