25505144603 has 2 divisors, whose sum is σ = 25505144604. Its totient is φ = 25505144602.

The previous prime is 25505144573. The next prime is 25505144647. The reversal of 25505144603 is 30644150552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25505144603 - 2¹⁴ = 25505128219 is a prime.

It is not a weakly prime, because it can be changed into another prime (25505144683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752572301 + 12752572302.

It is an arithmetic number, because the mean of its divisors is an integer number (12752572302).

Almost surely, 2^25505144603 is an apocalyptic number.

25505144603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25505144603 is an equidigital number, since it uses as much as digits as its factorization.

25505144603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 25505144603 in words is "twenty-five billion, five hundred five million, one hundred forty-four thousand, six hundred three".