25563238053632 has 144 divisors (see below), whose sum is σ = 53138944615680. Its totient is φ = 12263368728576.

The previous prime is 25563238053623. The next prime is 25563238053637. The reversal of 25563238053632 is 23635083236552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25563238053637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887813828 + ... + 887842620.

It is an arithmetic number, because the mean of its divisors is an integer number (369020448720).

Almost surely, 2^{25563238053632} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25563238053632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26569472307840).

25563238053632 is an abundant number, since it is smaller than the sum of its proper divisors (27575706562048).

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

25563238053632 is a wasteful number, since it uses less digits than its factorization.

25563238053632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30278 (or 30264 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 53.

The spelling of 25563238053632 in words is "twenty-five trillion, five hundred sixty-three billion, two hundred thirty-eight million, fifty-three thousand, six hundred thirty-two".