764161785425 has 12 divisors (see below), whose sum is σ = 978127086336. Its totient is φ = 591609123600.

The previous prime is 764161785391. The next prime is 764161785427. The reversal of 764161785425 is 524587161467.

It is not a de Polignac number, because 764161785425 - 2²⁶ = 764094676561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764161785427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 493006829 + ... + 493008378.

It is an arithmetic number, because the mean of its divisors is an integer number (81510590528).

Almost surely, 2^764161785425 is an apocalyptic number.

It is an amenable number.

764161785425 is a deficient number, since it is larger than the sum of its proper divisors (213965300911).

764161785425 is a wasteful number, since it uses less digits than its factorization.

764161785425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986015248 (or 986015243 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 56.

The spelling of 764161785425 in words is "seven hundred sixty-four billion, one hundred sixty-one million, seven hundred eighty-five thousand, four hundred twenty-five".