25532250564630 has 128 divisors (see below), whose sum is σ = 62728854935040. Its totient is φ = 6649003146240.

The previous prime is 25532250564619. The next prime is 25532250564659. The reversal of 25532250564630 is 3646505223552.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25532250564630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162246285 + ... + 162403575.

It is an arithmetic number, because the mean of its divisors is an integer number (490069179180).

Almost surely, 2^{25532250564630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25532250564630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31364427467520).

25532250564630 is an abundant number, since it is smaller than the sum of its proper divisors (37196604370410).

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

25532250564630 is a wasteful number, since it uses less digits than its factorization.

25532250564630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157966.

The product of its (nonzero) digits is 6480000, while the sum is 48.

The spelling of 25532250564630 in words is "twenty-five trillion, five hundred thirty-two billion, two hundred fifty million, five hundred sixty-four thousand, six hundred thirty".