25117140 has 48 divisors (see below), whose sum is σ = 70576128. Its totient is φ = 6674304.

The previous prime is 25117111. The next prime is 25117151. The reversal of 25117140 is 4171152.

It is a happy number.

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, 22434 + ... + 23526.

It is an arithmetic number, because the mean of its divisors is an integer number (1470336).

Almost surely, 2^25117140 is an apocalyptic number.

25117140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25117140 is an abundant number, since it is smaller than the sum of its proper divisors (45458988).

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

25117140 is a wasteful number, since it uses less digits than its factorization.

25117140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 25117140 is about 5011.7003102739. The cubic root of 25117140 is about 292.8577549632.

Adding to 25117140 its reverse (4171152), we get a palindrome (29288292).

It can be divided in two parts, 251 and 17140, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 25117140 in words is "twenty-five million, one hundred seventeen thousand, one hundred forty".