25585526061 has 24 divisors (see below), whose sum is σ = 37867362624. Its totient is φ = 16636991040.

The previous prime is 25585526003. The next prime is 25585526063. The reversal of 25585526061 is 16062558552.

25585526061 is a `hidden beast` number, since 2 + 5 + 585 + 5 + 2 + 6 + 0 + 61 = 666.

It is not a de Polignac number, because 25585526061 - 2⁹ = 25585525549 is a prime.

It is a super-2 number, since 2×25585526061² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25585525998 and 25585526016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25585526063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2920690 + ... + 2929436.

It is an arithmetic number, because the mean of its divisors is an integer number (1577806776).

Almost surely, 2^25585526061 is an apocalyptic number.

It is an amenable number.

25585526061 is a deficient number, since it is larger than the sum of its proper divisors (12281836563).

25585526061 is a wasteful number, since it uses less digits than its factorization.

25585526061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16721 (or 16718 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 25585526061 in words is "twenty-five billion, five hundred eighty-five million, five hundred twenty-six thousand, sixty-one".