25543275416 has 32 divisors (see below), whose sum is σ = 50153925600. Its totient is φ = 12172849920.

The previous prime is 25543275403. The next prime is 25543275419. The reversal of 25543275416 is 61457234552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25543275419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195311 + ... + 298718.

It is an arithmetic number, because the mean of its divisors is an integer number (1567310175).

Almost surely, 2^25543275416 is an apocalyptic number.

It is an amenable number.

25543275416 is a deficient number, since it is larger than the sum of its proper divisors (24610650184).

25543275416 is a wasteful number, since it uses less digits than its factorization.

25543275416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494339 (or 494335 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 44.

The spelling of 25543275416 in words is "twenty-five billion, five hundred forty-three million, two hundred seventy-five thousand, four hundred sixteen".