25771345548 has 24 divisors (see below), whose sum is σ = 64758766128. Its totient is φ = 7929644736.

The previous prime is 25771345543. The next prime is 25771345549. The reversal of 25771345548 is 84554317752.

It is a self number, because there is not a number n which added to its sum of digits gives 25771345548.

It is not an unprimeable number, because it can be changed into a prime (25771345543) 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, 82600311 + ... + 82600622.

It is an arithmetic number, because the mean of its divisors is an integer number (2698281922).

Almost surely, 2^25771345548 is an apocalyptic number.

It is an amenable number.

25771345548 is an abundant number, since it is smaller than the sum of its proper divisors (38987420580).

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

25771345548 is a wasteful number, since it uses less digits than its factorization.

25771345548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165200953 (or 165200951 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 51.

The spelling of 25771345548 in words is "twenty-five billion, seven hundred seventy-one million, three hundred forty-five thousand, five hundred forty-eight".