25424505 has 12 divisors (see below), whose sum is σ = 44069220. Its totient is φ = 13559712.

The previous prime is 25424467. The next prime is 25424507. The reversal of 25424505 is 50542452.

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 22838841 = 1608^2 + 4779^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25424505 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25424507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282450 + ... + 282539.

It is an arithmetic number, because the mean of its divisors is an integer number (3672435).

Almost surely, 2^25424505 is an apocalyptic number.

It is an amenable number.

25424505 is a deficient number, since it is larger than the sum of its proper divisors (18644715).

25424505 is a wasteful number, since it uses less digits than its factorization.

25424505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565000 (or 564997 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 25424505 is about 5042.2718094129. The cubic root of 25424505 is about 294.0475072473.

Adding to 25424505 its reverse (50542452), we get a palindrome (75966957).

The spelling of 25424505 in words is "twenty-five million, four hundred twenty-four thousand, five hundred five".