25555050552 has 16 divisors (see below), whose sum is σ = 63887626440. Its totient is φ = 8518350176.

The previous prime is 25555050541. The next prime is 25555050557. The reversal of 25555050552 is 25505055552.

It is a self number, because there is not a number n which added to its sum of digits gives 25555050552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555050557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532396863 + ... + 532396910.

Almost surely, 2^25555050552 is an apocalyptic number.

It is an amenable number.

25555050552 is an abundant number, since it is smaller than the sum of its proper divisors (38332575888).

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

25555050552 is a wasteful number, since it uses less digits than its factorization.

25555050552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064793782 (or 1064793778 counting only the distinct ones).

The product of its (nonzero) digits is 312500, while the sum is 39.

Subtracting from 25555050552 its reverse (25505055552), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 25555050552 in words is "twenty-five billion, five hundred fifty-five million, fifty thousand, five hundred fifty-two".