25529211292552 has 64 divisors (see below), whose sum is σ = 54983577600000. Its totient is φ = 10990165020480.

The previous prime is 25529211292549. The next prime is 25529211292573.

25529211292552 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25529211292552.

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, 3343449 + ... + 7889047.

It is an arithmetic number, because the mean of its divisors is an integer number (859118400000).

Almost surely, 2^{25529211292552} is an apocalyptic number.

25529211292552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25529211292552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27491788800000).

25529211292552 is an abundant number, since it is smaller than the sum of its proper divisors (29454366307448).

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

25529211292552 is a wasteful number, since it uses less digits than its factorization.

25529211292552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548994 (or 4548990 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 52.

The spelling of 25529211292552 in words is "twenty-five trillion, five hundred twenty-nine billion, two hundred eleven million, two hundred ninety-two thousand, five hundred fifty-two".