25413140 has 12 divisors (see below), whose sum is σ = 53367636. Its totient is φ = 10165248.

The previous prime is 25413139. The next prime is 25413217. The reversal of 25413140 is 4131452.

It can be written as a sum of positive squares in 2 ways, for example, as 17673616 + 7739524 = 4204^2 + 2782^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1270657 = 25413140 / (2 + 5 + 4 + 1 + 3 + 1 + 4 + 0).

It is a congruent number.

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, 635309 + ... + 635348.

It is an arithmetic number, because the mean of its divisors is an integer number (4447303).

Almost surely, 2^25413140 is an apocalyptic number.

25413140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25413140 is an abundant number, since it is smaller than the sum of its proper divisors (27954496).

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

25413140 is a wasteful number, since it uses less digits than its factorization.

25413140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270666 (or 1270664 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 25413140 is about 5041.1447112734. The cubic root of 25413140 is about 294.0036866892.

Adding to 25413140 its reverse (4131452), we get a palindrome (29544592).

The spelling of 25413140 in words is "twenty-five million, four hundred thirteen thousand, one hundred forty".