3891792085225 has 12 divisors (see below), whose sum is σ = 5264533293840. Its totient is φ = 2830394243600.

The previous prime is 3891792085217. The next prime is 3891792085249. The reversal of 3891792085225 is 5225802971983.

It is not a de Polignac number, because 3891792085225 - 2³ = 3891792085217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7075985335 + ... + 7075985884.

It is an arithmetic number, because the mean of its divisors is an integer number (438711107820).

Almost surely, 2^{3891792085225} is an apocalyptic number.

It is an amenable number.

3891792085225 is a deficient number, since it is larger than the sum of its proper divisors (1372741208615).

3891792085225 is a wasteful number, since it uses less digits than its factorization.

3891792085225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151971240 (or 14151971235 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 61.

The spelling of 3891792085225 in words is "three trillion, eight hundred ninety-one billion, seven hundred ninety-two million, eighty-five thousand, two hundred twenty-five".