25443040550 has 12 divisors (see below), whose sum is σ = 47324055516. Its totient is φ = 10177216200.

The previous prime is 25443040501. The next prime is 25443040559. The reversal of 25443040550 is 5504034452.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25443040559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254430356 + ... + 254430455.

It is an arithmetic number, because the mean of its divisors is an integer number (3943671293).

Almost surely, 2^25443040550 is an apocalyptic number.

25443040550 is a deficient number, since it is larger than the sum of its proper divisors (21881014966).

25443040550 is a wasteful number, since it uses less digits than its factorization.

25443040550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508860823 (or 508860818 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

The spelling of 25443040550 in words is "twenty-five billion, four hundred forty-three million, forty thousand, five hundred fifty".