25453140 has 48 divisors (see below), whose sum is σ = 71584128. Its totient is φ = 6757504.

The previous prime is 25453123. The next prime is 25453159. The reversal of 25453140 is 4135452.

It is a self number, because there is not a number n which added to its sum of digits gives 25453140.

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, 14974 + ... + 16586.

It is an arithmetic number, because the mean of its divisors is an integer number (1491336).

Almost surely, 2^25453140 is an apocalyptic number.

25453140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25453140 is an abundant number, since it is smaller than the sum of its proper divisors (46130988).

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

25453140 is a wasteful number, since it uses less digits than its factorization.

25453140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25453140 is about 5045.1105042407. The cubic root of 25453140 is about 294.1578586746.

Adding to 25453140 its reverse (4135452), we get a palindrome (29588592).

The spelling of 25453140 in words is "twenty-five million, four hundred fifty-three thousand, one hundred forty".