25145254250 has 32 divisors (see below), whose sum is σ = 47869773120. Its totient is φ = 9887619600.

The previous prime is 25145254247. The next prime is 25145254261. The reversal of 25145254250 is 5245254152.

It is a super-2 number, since 2×25145254250² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25145254250.

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, 837632 + ... + 867131.

It is an arithmetic number, because the mean of its divisors is an integer number (1495930410).

Almost surely, 2^25145254250 is an apocalyptic number.

25145254250 is a deficient number, since it is larger than the sum of its proper divisors (22724518870).

25145254250 is a wasteful number, since it uses less digits than its factorization.

25145254250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704839 (or 1704829 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

The spelling of 25145254250 in words is "twenty-five billion, one hundred forty-five million, two hundred fifty-four thousand, two hundred fifty".