25275002503 has 4 divisors (see below), whose sum is σ = 25621235488. Its totient is φ = 24928769520.

The previous prime is 25275002497. The next prime is 25275002527. The reversal of 25275002503 is 30520057252.

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 25275002503 - 2²⁹ = 24738131591 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 (25275002003) 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, 173116383 + ... + 173116528.

It is an arithmetic number, because the mean of its divisors is an integer number (6405308872).

Almost surely, 2^25275002503 is an apocalyptic number.

25275002503 is a deficient number, since it is larger than the sum of its proper divisors (346232985).

25275002503 is an equidigital number, since it uses as much as digits as its factorization.

25275002503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346232984.

The product of its (nonzero) digits is 21000, while the sum is 31.

Adding to 25275002503 its reverse (30520057252), we get a palindrome (55795059755).

The spelling of 25275002503 in words is "twenty-five billion, two hundred seventy-five million, two thousand, five hundred three".