25066656435240 has 96 divisors (see below), whose sum is σ = 93104723911680. Its totient is φ = 5729521470336.

The previous prime is 25066656435209. The next prime is 25066656435251. The reversal of 25066656435240 is 4253465666052.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4973540424 + ... + 4973545463.

It is an arithmetic number, because the mean of its divisors is an integer number (969840874080).

Almost surely, 2^{25066656435240} is an apocalyptic number.

25066656435240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25066656435240 is an abundant number, since it is smaller than the sum of its proper divisors (68038067476440).

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

25066656435240 is a wasteful number, since it uses less digits than its factorization.

25066656435240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9947085911 (or 9947085904 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 54.

The spelling of 25066656435240 in words is "twenty-five trillion, sixty-six billion, six hundred fifty-six million, four hundred thirty-five thousand, two hundred forty".