25240560503 has 4 divisors (see below), whose sum is σ = 25259873640. Its totient is φ = 25221247368.

The previous prime is 25240560491. The next prime is 25240560509. The reversal of 25240560503 is 30506504252.

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 25240560503 - 2⁴ = 25240560487 is a prime.

It is a super-2 number, since 2×25240560503² (a number of 22 digits) contains 22 as substring.

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 25240560503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25240560509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9654608 + ... + 9657221.

It is an arithmetic number, because the mean of its divisors is an integer number (6314968410).

Almost surely, 2^25240560503 is an apocalyptic number.

25240560503 is a deficient number, since it is larger than the sum of its proper divisors (19313137).

25240560503 is a wasteful number, since it uses less digits than its factorization.

25240560503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19313136.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 25240560503 in words is "twenty-five billion, two hundred forty million, five hundred sixty thousand, five hundred three".