25617440003 has 2 divisors, whose sum is σ = 25617440004. Its totient is φ = 25617440002.

The previous prime is 25617439999. The next prime is 25617440077. The reversal of 25617440003 is 30004471652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25617440003 - 2² = 25617439999 is a prime.

It is not a weakly prime, because it can be changed into another prime (25617640003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808720001 + 12808720002.

It is an arithmetic number, because the mean of its divisors is an integer number (12808720002).

Almost surely, 2^25617440003 is an apocalyptic number.

25617440003 is a deficient number, since it is larger than the sum of its proper divisors (1).

25617440003 is an equidigital number, since it uses as much as digits as its factorization.

25617440003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 25617440003 in words is "twenty-five billion, six hundred seventeen million, four hundred forty thousand, three".