1641365265725 has 12 divisors (see below), whose sum is σ = 2036376166560. Its totient is φ = 1312393350000.

The previous prime is 1641365265719. The next prime is 1641365265769. The reversal of 1641365265725 is 5275625631461.

It is not a de Polignac number, because 1641365265725 - 2¹⁰ = 1641365264701 is a prime.

It is a congruent number.

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, 17423651 + ... + 17517600.

It is an arithmetic number, because the mean of its divisors is an integer number (169698013880).

Almost surely, 2^{1641365265725} is an apocalyptic number.

It is an amenable number.

1641365265725 is a deficient number, since it is larger than the sum of its proper divisors (395010900835).

1641365265725 is a wasteful number, since it uses less digits than its factorization.

1641365265725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34943140 (or 34943135 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 53.

The spelling of 1641365265725 in words is "one trillion, six hundred forty-one billion, three hundred sixty-five million, two hundred sixty-five thousand, seven hundred twenty-five".