25348310728 has 32 divisors (see below), whose sum is σ = 51192610560. Its totient is φ = 11697272640.

The previous prime is 25348310699. The next prime is 25348310791. The reversal of 25348310728 is 82701384352.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745801 + ... + 779047.

It is an arithmetic number, because the mean of its divisors is an integer number (1599769080).

Almost surely, 2^25348310728 is an apocalyptic number.

It is an amenable number.

25348310728 is an abundant number, since it is smaller than the sum of its proper divisors (25844299832).

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

25348310728 is a wasteful number, since it uses less digits than its factorization.

25348310728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40597 (or 40593 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 25348310728 in words is "twenty-five billion, three hundred forty-eight million, three hundred ten thousand, seven hundred twenty-eight".