25280030503 has 32 divisors (see below), whose sum is σ = 32596687872. Its totient is φ = 19055520000.

The previous prime is 25280030459. The next prime is 25280030513. The reversal of 25280030503 is 30503008252.

It is a cyclic number.

It is not a de Polignac number, because 25280030503 - 2²⁵ = 25246476071 is a prime.

It is a super-2 number, since 2×25280030503² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280030513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 501283 + ... + 549403.

It is an arithmetic number, because the mean of its divisors is an integer number (1018646496).

Almost surely, 2^25280030503 is an apocalyptic number.

25280030503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25280030503 is a deficient number, since it is larger than the sum of its proper divisors (7316657369).

25280030503 is a wasteful number, since it uses less digits than its factorization.

25280030503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48415.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 25280030503 its reverse (30503008252), we get a palindrome (55783038755).

The spelling of 25280030503 in words is "twenty-five billion, two hundred eighty million, thirty thousand, five hundred three".