25113122503 has 16 divisors (see below), whose sum is σ = 29754982656. Its totient is φ = 20747482560.

The previous prime is 25113122497. The next prime is 25113122509. The reversal of 25113122503 is 30522131152.

It is an interprime number because it is at equal distance from previous prime (25113122497) and next prime (25113122509).

It is a de Polignac number, because none of the positive numbers 2^k-25113122503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25113122509) 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, 503301 + ... + 550942.

It is an arithmetic number, because the mean of its divisors is an integer number (1859686416).

Almost surely, 2^25113122503 is an apocalyptic number.

25113122503 is a deficient number, since it is larger than the sum of its proper divisors (4641860153).

25113122503 is a wasteful number, since it uses less digits than its factorization.

25113122503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054374.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 25113122503 its reverse (30522131152), we get a palindrome (55635253655).

The spelling of 25113122503 in words is "twenty-five billion, one hundred thirteen million, one hundred twenty-two thousand, five hundred three".