25385522605 has 16 divisors (see below), whose sum is σ = 31403338560. Its totient is φ = 19690708608.

The previous prime is 25385522573. The next prime is 25385522611. The reversal of 25385522605 is 50622558352.

It is a cyclic number.

It is not a de Polignac number, because 25385522605 - 2⁵ = 25385522573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567867 + ... + 610936.

It is an arithmetic number, because the mean of its divisors is an integer number (1962708660).

Almost surely, 2^25385522605 is an apocalyptic number.

It is an amenable number.

25385522605 is a deficient number, since it is larger than the sum of its proper divisors (6017815955).

25385522605 is a wasteful number, since it uses less digits than its factorization.

25385522605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178940.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 25385522605 in words is "twenty-five billion, three hundred eighty-five million, five hundred twenty-two thousand, six hundred five".