25505555252503 has 8 divisors (see below), whose sum is σ = 27010374883920. Its totient is φ = 24001234826880.

The previous prime is 25505555252477. The next prime is 25505555252561. The reversal of 25505555252503 is 30525255550552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25505555252503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25505555252563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124696248 + ... + 124900621.

It is an arithmetic number, because the mean of its divisors is an integer number (3376296860490).

Almost surely, 2^{25505555252503} is an apocalyptic number.

25505555252503 is a deficient number, since it is larger than the sum of its proper divisors (1504819631417).

25505555252503 is a wasteful number, since it uses less digits than its factorization.

25505555252503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249602897.

The product of its (nonzero) digits is 9375000, while the sum is 49.

The spelling of 25505555252503 in words is "twenty-five trillion, five hundred five billion, five hundred fifty-five million, two hundred fifty-two thousand, five hundred three".