25490876503 has 4 divisors (see below), whose sum is σ = 25581591648. Its totient is φ = 25400161360.

The previous prime is 25490876479. The next prime is 25490876507. The reversal of 25490876503 is 30567809452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25490876503 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25490876507) 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, 45357151 + ... + 45357712.

It is an arithmetic number, because the mean of its divisors is an integer number (6395397912).

Almost surely, 2^25490876503 is an apocalyptic number.

25490876503 is a deficient number, since it is larger than the sum of its proper divisors (90715145).

25490876503 is an equidigital number, since it uses as much as digits as its factorization.

25490876503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90715144.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 25490876503 in words is "twenty-five billion, four hundred ninety million, eight hundred seventy-six thousand, five hundred three".