25505883530 has 32 divisors (see below), whose sum is σ = 48858034896. Its totient is φ = 9553460224.

The previous prime is 25505883527. The next prime is 25505883539. The reversal of 25505883530 is 3538850552.

It can be written as a sum of positive squares in 8 ways, for example, as 24759337201 + 746546329 = 157351^2 + 27323^2 .

It is not an unprimeable number, because it can be changed into a prime (25505883539) 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, 347309 + ... + 414288.

Almost surely, 2^25505883530 is an apocalyptic number.

25505883530 is a deficient number, since it is larger than the sum of its proper divisors (23352151366).

25505883530 is a wasteful number, since it uses less digits than its factorization.

25505883530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761818.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 25505883530 in words is "twenty-five billion, five hundred five million, eight hundred eighty-three thousand, five hundred thirty".