25434140 has 24 divisors (see below), whose sum is σ = 53616192. Its totient is φ = 10134720.

The previous prime is 25434127. The next prime is 25434161. The reversal of 25434140 is 4143452.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3245 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (2234008).

Almost surely, 2^25434140 is an apocalyptic number.

25434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25434140 is an abundant number, since it is smaller than the sum of its proper divisors (28182052).

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

25434140 is a wasteful number, since it uses less digits than its factorization.

25434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4877 (or 4875 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 25434140 is about 5043.2271414244. The cubic root of 25434140 is about 294.0846471368.

Adding to 25434140 its reverse (4143452), we get a palindrome (29577592).

The spelling of 25434140 in words is "twenty-five million, four hundred thirty-four thousand, one hundred forty".