25815933472 has 48 divisors (see below), whose sum is σ = 58821154560. Its totient is φ = 10923913728.

The previous prime is 25815933431. The next prime is 25815933511. The reversal of 25815933472 is 27433951852.

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, 711733 + ... + 747124.

It is an arithmetic number, because the mean of its divisors is an integer number (1225440720).

Almost surely, 2^25815933472 is an apocalyptic number.

It is an amenable number.

25815933472 is an abundant number, since it is smaller than the sum of its proper divisors (33005221088).

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

25815933472 is a wasteful number, since it uses less digits than its factorization.

25815933472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458953 (or 1458945 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 49.

The spelling of 25815933472 in words is "twenty-five billion, eight hundred fifteen million, nine hundred thirty-three thousand, four hundred seventy-two".