25605025154560 has 160 divisors (see below), whose sum is σ = 63208622058912. Its totient is φ = 9940333363200.

The previous prime is 25605025154551. The next prime is 25605025154603. The reversal of 25605025154560 is 6545152050652.

It is a tau number, because it is divible by the number of its divisors (160).

It is a self number, because there is not a number n which added to its sum of digits gives 25605025154560.

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 15 ways as a sum of consecutive naturals, for example, 37645659 + ... + 38319781.

Almost surely, 2^{25605025154560} is an apocalyptic number.

25605025154560 is a gapful number since it is divisible by the number (20) 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 25605025154560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31604311029456).

25605025154560 is an abundant number, since it is smaller than the sum of its proper divisors (37603596904352).

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

25605025154560 is an equidigital number, since it uses as much as digits as its factorization.

25605025154560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674584 (or 674568 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 25605025154560 in words is "twenty-five trillion, six hundred five billion, twenty-five million, one hundred fifty-four thousand, five hundred sixty".