3145381665525 has 36 divisors (see below), whose sum is σ = 6145885150080. Its totient is φ = 1525033533600.

The previous prime is 3145381665511. The next prime is 3145381665533. The reversal of 3145381665525 is 5255661835413.

3145381665525 is a `hidden beast` number, since 3 + 1 + 4 + 5 + 3 + 81 + 6 + 6 + 552 + 5 = 666.

It is not a de Polignac number, because 3145381665525 - 2⁴ = 3145381665509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 635428165 + ... + 635433114.

Almost surely, 2^{3145381665525} is an apocalyptic number.

It is an amenable number.

3145381665525 is a deficient number, since it is larger than the sum of its proper divisors (3000503484555).

3145381665525 is a wasteful number, since it uses less digits than its factorization.

3145381665525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270861306 (or 1270861298 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 54.

The spelling of 3145381665525 in words is "three trillion, one hundred forty-five billion, three hundred eighty-one million, six hundred sixty-five thousand, five hundred twenty-five".