25123052155203 has 24 divisors (see below), whose sum is σ = 36520551323568. Its totient is φ = 16641767068992.

The previous prime is 25123052155169. The next prime is 25123052155217. The reversal of 25123052155203 is 30255125032152.

25123052155203 is a `hidden beast` number, since 2 + 5 + 1 + 230 + 5 + 215 + 5 + 203 = 666.

It is not a de Polignac number, because 25123052155203 - 2⁹ = 25123052154691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25123052155283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153818100 + ... + 153981342.

It is an arithmetic number, because the mean of its divisors is an integer number (1521689638482).

Almost surely, 2^{25123052155203} is an apocalyptic number.

25123052155203 is a deficient number, since it is larger than the sum of its proper divisors (11397499168365).

25123052155203 is a wasteful number, since it uses less digits than its factorization.

25123052155203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272323 (or 272320 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 25123052155203 its reverse (30255125032152), we get a palindrome (55378177187355).

The spelling of 25123052155203 in words is "twenty-five trillion, one hundred twenty-three billion, fifty-two million, one hundred fifty-five thousand, two hundred three".