25536562002 has 96 divisors (see below), whose sum is σ = 67095475200. Its totient is φ = 6852363264.

The previous prime is 25536561991. The next prime is 25536562027. The reversal of 25536562002 is 20026563552.

25536562002 is a `hidden beast` number, since 25 + 5 + 3 + 6 + 5 + 620 + 0 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1013574 + ... + 1038462.

It is an arithmetic number, because the mean of its divisors is an integer number (698911200).

Almost surely, 2^25536562002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25536562002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33547737600).

25536562002 is an abundant number, since it is smaller than the sum of its proper divisors (41558913198).

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

25536562002 is a wasteful number, since it uses less digits than its factorization.

25536562002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25400 (or 25397 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 25536562002 in words is "twenty-five billion, five hundred thirty-six million, five hundred sixty-two thousand, two".