25428258503 has 2 divisors, whose sum is σ = 25428258504. Its totient is φ = 25428258502.

The previous prime is 25428258481. The next prime is 25428258509. The reversal of 25428258503 is 30585282452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25428258503 - 2⁶ = 25428258439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25428258509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12714129251 + 12714129252.

It is an arithmetic number, because the mean of its divisors is an integer number (12714129252).

Almost surely, 2^25428258503 is an apocalyptic number.

25428258503 is a deficient number, since it is larger than the sum of its proper divisors (1).

25428258503 is an equidigital number, since it uses as much as digits as its factorization.

25428258503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768000, while the sum is 44.

The spelling of 25428258503 in words is "twenty-five billion, four hundred twenty-eight million, two hundred fifty-eight thousand, five hundred three".