25241540 has 24 divisors (see below), whose sum is σ = 53192832. Its totient is φ = 10061280.

The previous prime is 25241537. The next prime is 25241543. The reversal of 25241540 is 4514252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25241537) and next prime (25241543).

It is not an unprimeable number, because it can be changed into a prime (25241543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4085 + ... + 8195.

It is an arithmetic number, because the mean of its divisors is an integer number (2216368).

Almost surely, 2^25241540 is an apocalyptic number.

25241540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25241540 is an abundant number, since it is smaller than the sum of its proper divisors (27951292).

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

25241540 is a wasteful number, since it uses less digits than its factorization.

25241540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427 (or 4425 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 25241540 is about 5024.0959385744. The cubic root of 25241540 is about 293.3404469120.

Adding to 25241540 its reverse (4514252), we get a palindrome (29755792).

The spelling of 25241540 in words is "twenty-five million, two hundred forty-one thousand, five hundred forty".