25502550503 has 2 divisors, whose sum is σ = 25502550504. Its totient is φ = 25502550502.

The previous prime is 25502550473. The next prime is 25502550529. The reversal of 25502550503 is 30505520552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25502550503 - 2⁸ = 25502550247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25502550503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25502550533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12751275251 + 12751275252.

It is an arithmetic number, because the mean of its divisors is an integer number (12751275252).

Almost surely, 2^25502550503 is an apocalyptic number.

25502550503 is a deficient number, since it is larger than the sum of its proper divisors (1).

25502550503 is an equidigital number, since it uses as much as digits as its factorization.

25502550503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37500, while the sum is 32.

The spelling of 25502550503 in words is "twenty-five billion, five hundred two million, five hundred fifty thousand, five hundred three".