3781315625 has 12 divisors (see below), whose sum is σ = 4726345932. Its totient is φ = 3025050000.

The previous prime is 3781315607. The next prime is 3781315691. The reversal of 3781315625 is 5265131873.

It can be written as a sum of positive squares in 6 ways, for example, as 2346724249 + 1434591376 = 48443^2 + 37876^2 .

It is not a de Polignac number, because 3781315625 - 2¹⁶ = 3781250089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 601886 + ... + 608135.

It is an arithmetic number, because the mean of its divisors is an integer number (393862161).

Almost surely, 2^3781315625 is an apocalyptic number.

It is an amenable number.

3781315625 is a deficient number, since it is larger than the sum of its proper divisors (945030307).

3781315625 is an frugal number, since it uses more digits than its factorization.

3781315625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210046 (or 1210026 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 3781315625 is about 61492.4029860600. The cubic root of 3781315625 is about 1557.9289338002.

The spelling of 3781315625 in words is "three billion, seven hundred eighty-one million, three hundred fifteen thousand, six hundred twenty-five".