25280530250503 has 4 divisors (see below), whose sum is σ = 27578760273288. Its totient is φ = 22982300227720.

The previous prime is 25280530250483. The next prime is 25280530250621. The reversal of 25280530250503 is 30505203508252.

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 25280530250503 - 2¹⁷ = 25280530119431 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 (25280530256503) 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, 1149115011376 + ... + 1149115011397.

It is an arithmetic number, because the mean of its divisors is an integer number (6894690068322).

Almost surely, 2^{25280530250503} is an apocalyptic number.

25280530250503 is a deficient number, since it is larger than the sum of its proper divisors (2298230022785).

25280530250503 is a wasteful number, since it uses less digits than its factorization.

25280530250503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298230022784.

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 25280530250503 its reverse (30505203508252), we get a palindrome (55785733758755).

The spelling of 25280530250503 in words is "twenty-five trillion, two hundred eighty billion, five hundred thirty million, two hundred fifty thousand, five hundred three".