25560660030 has 64 divisors (see below), whose sum is σ = 63724795200. Its totient is φ = 6553774080.

The previous prime is 25560660007. The next prime is 25560660071. The reversal of 25560660030 is 3006606552.

It is a junction number, because it is equal to n+sod(n) for n = 25560659973 and 25560660000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148716 + ... + 270624.

It is an arithmetic number, because the mean of its divisors is an integer number (995699925).

Almost surely, 2^25560660030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25560660030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31862397600).

25560660030 is an abundant number, since it is smaller than the sum of its proper divisors (38164135170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25560660030 is a wasteful number, since it uses less digits than its factorization.

25560660030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122189.

The product of its (nonzero) digits is 32400, while the sum is 33.

The spelling of 25560660030 in words is "twenty-five billion, five hundred sixty million, six hundred sixty thousand, thirty".