25305255502503 has 16 divisors (see below), whose sum is σ = 33992538624000. Its totient is φ = 16744243043360.

The previous prime is 25305255502493. The next prime is 25305255502511. The reversal of 25305255502503 is 30520555250352.

It is a cyclic number.

It is not a de Polignac number, because 25305255502503 - 2¹² = 25305255498407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305255502543) 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, 20870343 + ... + 22049528.

It is an arithmetic number, because the mean of its divisors is an integer number (2124533664000).

Almost surely, 2^{25305255502503} is an apocalyptic number.

25305255502503 is a deficient number, since it is larger than the sum of its proper divisors (8687283121497).

25305255502503 is a wasteful number, since it uses less digits than its factorization.

25305255502503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42921342.

The product of its (nonzero) digits is 1125000, while the sum is 42.

The spelling of 25305255502503 in words is "twenty-five trillion, three hundred five billion, two hundred fifty-five million, five hundred two thousand, five hundred three".