25424340 has 48 divisors (see below), whose sum is σ = 73489920. Its totient is φ = 6560640.

The previous prime is 25424303. The next prime is 25424341. The reversal of 25424340 is 4342452.

It is a self number, because there is not a number n which added to its sum of digits gives 25424340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25424341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4975 + ... + 8694.

It is an arithmetic number, because the mean of its divisors is an integer number (1531040).

Almost surely, 2^25424340 is an apocalyptic number.

25424340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25424340 is an abundant number, since it is smaller than the sum of its proper divisors (48065580).

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

25424340 is a wasteful number, since it uses less digits than its factorization.

25424340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13712 (or 13710 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 25424340 is about 5042.2554477139. The cubic root of 25424340 is about 294.0468711425.

Adding to 25424340 its reverse (4342452), we get a palindrome (29766792).

The spelling of 25424340 in words is "twenty-five million, four hundred twenty-four thousand, three hundred forty".