25380140 has 12 divisors (see below), whose sum is σ = 53298336. Its totient is φ = 10152048.

The previous prime is 25380097. The next prime is 25380161. The reversal of 25380140 is 4108352.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634484 + ... + 634523.

It is an arithmetic number, because the mean of its divisors is an integer number (4441528).

Almost surely, 2^25380140 is an apocalyptic number.

25380140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25380140 is an abundant number, since it is smaller than the sum of its proper divisors (27918196).

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

25380140 is a wasteful number, since it uses less digits than its factorization.

25380140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269016 (or 1269014 counting only the distinct ones).

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

The square root of 25380140 is about 5037.8705819026. The cubic root of 25380140 is about 293.8763729685.

Adding to 25380140 its reverse (4108352), we get a palindrome (29488492).

The spelling of 25380140 in words is "twenty-five million, three hundred eighty thousand, one hundred forty".