25253140 has 48 divisors (see below), whose sum is σ = 58625280. Its totient is φ = 9060480.

The previous prime is 25253117. The next prime is 25253159. The reversal of 25253140 is 4135252.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16654 + ... + 18106.

It is an arithmetic number, because the mean of its divisors is an integer number (1221360).

Almost surely, 2^25253140 is an apocalyptic number.

25253140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25253140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29312640).

25253140 is an abundant number, since it is smaller than the sum of its proper divisors (33372140).

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

25253140 is a wasteful number, since it uses less digits than its factorization.

25253140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25253140 is about 5025.2502425252. The cubic root of 25253140 is about 293.3853758672.

Adding to 25253140 its reverse (4135252), we get a palindrome (29388392).

It can be divided in two parts, 2525 and 3140, that added together give a palindrome (5665).

The spelling of 25253140 in words is "twenty-five million, two hundred fifty-three thousand, one hundred forty".