25142140 has 24 divisors (see below), whose sum is σ = 53796960. Its totient is φ = 9866688.

The previous prime is 25142107. The next prime is 25142141. The reversal of 25142140 is 4124152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25142141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10800 + ... + 12919.

It is an arithmetic number, because the mean of its divisors is an integer number (2241540).

Almost surely, 2^25142140 is an apocalyptic number.

25142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25142140 is an abundant number, since it is smaller than the sum of its proper divisors (28654820).

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

25142140 is a wasteful number, since it uses less digits than its factorization.

25142140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23781 (or 23779 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 25142140 is about 5014.1938534524. The cubic root of 25142140 is about 292.9548867241.

Adding to 25142140 its reverse (4124152), we get a palindrome (29266292).

The spelling of 25142140 in words is "twenty-five million, one hundred forty-two thousand, one hundred forty".