25305555505250 has 32 divisors (see below), whose sum is σ = 49005517158000. Its totient is φ = 9773180054400.

The previous prime is 25305555505159. The next prime is 25305555505259. The reversal of 25305555505250 is 5250555550352.

It can be written as a sum of positive squares in 8 ways, for example, as 486198003841 + 24819357501409 = 697279^2 + 4981903^2 .

It is a super-2 number, since 2×25305555505250² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25305555505195 and 25305555505204.

It is not an unprimeable number, because it can be changed into a prime (25305555505259) 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 15 ways as a sum of consecutive naturals, for example, 1745203475 + ... + 1745217974.

Almost surely, 2^{25305555505250} is an apocalyptic number.

25305555505250 is a deficient number, since it is larger than the sum of its proper divisors (23699961652750).

25305555505250 is a wasteful number, since it uses less digits than its factorization.

25305555505250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490421495 (or 3490421485 counting only the distinct ones).

The product of its (nonzero) digits is 4687500, while the sum is 47.

The spelling of 25305555505250 in words is "twenty-five trillion, three hundred five billion, five hundred fifty-five million, five hundred five thousand, two hundred fifty".