25243606605 has 48 divisors (see below), whose sum is σ = 47645864064. Its totient is φ = 11377376640.

The previous prime is 25243606603. The next prime is 25243606613. The reversal of 25243606605 is 50660634252.

It is not a de Polignac number, because 25243606605 - 2¹ = 25243606603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25243606603) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189682 + ... + 294051.

It is an arithmetic number, because the mean of its divisors is an integer number (992622168).

Almost surely, 2^25243606605 is an apocalyptic number.

It is an amenable number.

25243606605 is a deficient number, since it is larger than the sum of its proper divisors (22402257459).

25243606605 is a wasteful number, since it uses less digits than its factorization.

25243606605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483826 (or 483819 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 25243606605 in words is "twenty-five billion, two hundred forty-three million, six hundred six thousand, six hundred five".