25830140 has 48 divisors (see below), whose sum is σ = 65644992. Its totient is φ = 8334336.

The previous prime is 25830109. The next prime is 25830151. The reversal of 25830140 is 4103852.

It is a super-2 number, since 2×25830140² = 1334392264839200, which contains 22 as substring.

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, 3047 + ... + 7806.

It is an arithmetic number, because the mean of its divisors is an integer number (1367604).

Almost surely, 2^25830140 is an apocalyptic number.

25830140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25830140 is an abundant number, since it is smaller than the sum of its proper divisors (39814852).

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

25830140 is a wasteful number, since it uses less digits than its factorization.

25830140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886 (or 10884 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 25830140 is about 5082.3360770417. The cubic root of 25830140 is about 295.6030563118.

Adding to 25830140 its reverse (4103852), we get a palindrome (29933992).

The spelling of 25830140 in words is "twenty-five million, eight hundred thirty thousand, one hundred forty".