3781816474525 has 24 divisors (see below), whose sum is σ = 4707851490720. Its totient is φ = 3013604975040.

The previous prime is 3781816474519. The next prime is 3781816474537. The reversal of 3781816474525 is 5254746181873.

It is not a de Polignac number, because 3781816474525 - 2⁵ = 3781816474493 is a prime.

It is a congruent number.

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, 6563734 + ... + 7116616.

It is an arithmetic number, because the mean of its divisors is an integer number (196160478780).

Almost surely, 2^{3781816474525} is an apocalyptic number.

It is an amenable number.

3781816474525 is a deficient number, since it is larger than the sum of its proper divisors (926035016195).

3781816474525 is a wasteful number, since it uses less digits than its factorization.

3781816474525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553965 (or 553960 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 61.

The spelling of 3781816474525 in words is "three trillion, seven hundred eighty-one billion, eight hundred sixteen million, four hundred seventy-four thousand, five hundred twenty-five".