25112535503 has 4 divisors (see below), whose sum is σ = 27395493288. Its totient is φ = 22829577720.

The previous prime is 25112535491. The next prime is 25112535551. The reversal of 25112535503 is 30553521152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25112535503 - 2¹² = 25112531407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25112535503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112535103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141478876 + ... + 1141478897.

It is an arithmetic number, because the mean of its divisors is an integer number (6848873322).

Almost surely, 2^25112535503 is an apocalyptic number.

25112535503 is a deficient number, since it is larger than the sum of its proper divisors (2282957785).

25112535503 is a wasteful number, since it uses less digits than its factorization.

25112535503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282957784.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 25112535503 in words is "twenty-five billion, one hundred twelve million, five hundred thirty-five thousand, five hundred three".