25550505052503 has 16 divisors (see below), whose sum is σ = 34098463029120. Its totient is φ = 17018109260064.

The previous prime is 25550505052487. The next prime is 25550505052601. The reversal of 25550505052503 is 30525050505552.

It is a happy number.

It is not a de Polignac number, because 25550505052503 - 2⁴ = 25550505052487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550505052103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265607668 + ... + 265703846.

It is an arithmetic number, because the mean of its divisors is an integer number (2131153939320).

Almost surely, 2^{25550505052503} is an apocalyptic number.

25550505052503 is a deficient number, since it is larger than the sum of its proper divisors (8547957976617).

25550505052503 is a wasteful number, since it uses less digits than its factorization.

25550505052503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176158.

The product of its (nonzero) digits is 937500, while the sum is 42.

The spelling of 25550505052503 in words is "twenty-five trillion, five hundred fifty billion, five hundred five million, fifty-two thousand, five hundred three".