25718360728 has 16 divisors (see below), whose sum is σ = 48237850080. Its totient is φ = 12854934048.

The previous prime is 25718360711. The next prime is 25718360753. The reversal of 25718360728 is 82706381752.

It is a super-2 number, since 2×25718360728² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504976 + ... + 553567.

It is an arithmetic number, because the mean of its divisors is an integer number (3014865630).

Almost surely, 2^25718360728 is an apocalyptic number.

It is an amenable number.

25718360728 is a deficient number, since it is larger than the sum of its proper divisors (22519489352).

25718360728 is a wasteful number, since it uses less digits than its factorization.

25718360728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061586 (or 1061582 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 25718360728 in words is "twenty-five billion, seven hundred eighteen million, three hundred sixty thousand, seven hundred twenty-eight".