25545355616016 has 60 divisors (see below), whose sum is σ = 71507558138172. Its totient is φ = 8513207820288.

The previous prime is 25545355615993. The next prime is 25545355616047. The reversal of 25545355616016 is 61061655354552.

25545355616016 is a `hidden beast` number, since 2 + 5 + 5 + 4 + 5 + 3 + 5 + 5 + 616 + 0 + 16 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8187266595600 + 17358089020416 = 2861340^2 + 4166304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19259281 + ... + 20542896.

Almost surely, 2^{25545355616016} is an apocalyptic number.

It is an amenable number.

25545355616016 is an abundant number, since it is smaller than the sum of its proper divisors (45962202522156).

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

25545355616016 is a wasteful number, since it uses less digits than its factorization.

25545355616016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39806648 (or 39806639 counting only the distinct ones).

The product of its (nonzero) digits is 16200000, while the sum is 54.

The spelling of 25545355616016 in words is "twenty-five trillion, five hundred forty-five billion, three hundred fifty-five million, six hundred sixteen thousand, sixteen".