3773890625 has 28 divisors (see below), whose sum is σ = 4751892300. Its totient is φ = 2997000000.

The previous prime is 3773890621. The next prime is 3773890643. The reversal of 3773890625 is 5260983773.

It is a happy number.

It is a Cunningham number, because it is equal to 61432²+1.

It can be written as a sum of positive squares in 14 ways, for example, as 2900037904 + 873852721 = 53852^2 + 29561^2 .

It is not a de Polignac number, because 3773890625 - 2² = 3773890621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3773890621) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2327315 + ... + 2328935.

Almost surely, 2^3773890625 is an apocalyptic number.

It is an amenable number.

3773890625 is a deficient number, since it is larger than the sum of its proper divisors (978001675).

3773890625 is an frugal number, since it uses more digits than its factorization.

3773890625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 50.

The square root of 3773890625 is about 61432.0000081391. Note that the first 5 decimals coincide. The cubic root of 3773890625 is about 1556.9085480266.

The spelling of 3773890625 in words is "three billion, seven hundred seventy-three million, eight hundred ninety thousand, six hundred twenty-five".