25728470720396 has 12 divisors (see below), whose sum is σ = 45024859696320. Its totient is φ = 12864225092880.

The previous prime is 25728470720389. The next prime is 25728470720437. The reversal of 25728470720396 is 69302707482752.

It is a super-2 number, since 2×25728470720396² (a number of 28 digits) contains 22 as substring.

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, 7203710 + ... + 10166138.

It is an arithmetic number, because the mean of its divisors is an integer number (3752071641360).

Almost surely, 2^{25728470720396} is an apocalyptic number.

It is an amenable number.

25728470720396 is a deficient number, since it is larger than the sum of its proper divisors (19296388975924).

25728470720396 is a wasteful number, since it uses less digits than its factorization.

25728470720396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133664 (or 5133662 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 62.

The spelling of 25728470720396 in words is "twenty-five trillion, seven hundred twenty-eight billion, four hundred seventy million, seven hundred twenty thousand, three hundred ninety-six".