25424245250 has 32 divisors (see below), whose sum is σ = 47606253552. Its totient is φ = 10167120000.

The previous prime is 25424245247. The next prime is 25424245289. The reversal of 25424245250 is 5254242452.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6745829689 + 18678415561 = 82133^2 + 136669^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25424245250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1204790 + ... + 1225710.

Almost surely, 2^25424245250 is an apocalyptic number.

25424245250 is a deficient number, since it is larger than the sum of its proper divisors (22182008302).

25424245250 is a wasteful number, since it uses less digits than its factorization.

25424245250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25799 (or 25789 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

The spelling of 25424245250 in words is "twenty-five billion, four hundred twenty-four million, two hundred forty-five thousand, two hundred fifty".