25552664650 has 48 divisors (see below), whose sum is σ = 48215217600. Its totient is φ = 10074240000.

The previous prime is 25552664633. The next prime is 25552664651. The reversal of 25552664650 is 5646625552.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 25552664650.

It is not an unprimeable number, because it can be changed into a prime (25552664651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1052650 + ... + 1076650.

It is an arithmetic number, because the mean of its divisors is an integer number (1004483700).

Almost surely, 2^25552664650 is an apocalyptic number.

25552664650 is a deficient number, since it is larger than the sum of its proper divisors (22662552950).

25552664650 is a wasteful number, since it uses less digits than its factorization.

25552664650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24319 (or 24314 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 25552664650 in words is "twenty-five billion, five hundred fifty-two million, six hundred sixty-four thousand, six hundred fifty".