25105484650 has 12 divisors (see below), whose sum is σ = 46696201542. Its totient is φ = 10042193840.

The previous prime is 25105484639. The next prime is 25105484659. The reversal of 25105484650 is 5648450152.

It can be written as a sum of positive squares in 3 ways, for example, as 17397873801 + 7707610849 = 131901^2 + 87793^2 .

It is a super-3 number, since 3×25105484650³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (25105484659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 251054797 + ... + 251054896.

Almost surely, 2^25105484650 is an apocalyptic number.

25105484650 is a deficient number, since it is larger than the sum of its proper divisors (21590716892).

25105484650 is a wasteful number, since it uses less digits than its factorization.

25105484650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502109705 (or 502109700 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 40.

The spelling of 25105484650 in words is "twenty-five billion, one hundred five million, four hundred eighty-four thousand, six hundred fifty".