3781225 has 48 divisors (see below), whose sum is σ = 5999616. Its totient is φ = 2304000.

The previous prime is 3781213. The next prime is 3781229. The reversal of 3781225 is 5221873.

It is a de Polignac number, because none of the positive numbers 2^k-3781225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3781193 and 3781202.

It is not an unprimeable number, because it can be changed into a prime (3781229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92205 + ... + 92245.

It is an arithmetic number, because the mean of its divisors is an integer number (124992).

Almost surely, 2^3781225 is an apocalyptic number.

3781225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3781225 is a deficient number, since it is larger than the sum of its proper divisors (2218391).

3781225 is a wasteful number, since it uses less digits than its factorization.

3781225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 101 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 3781225 is about 1944.5372200089. The cubic root of 3781225 is about 155.7916487653.

The spelling of 3781225 in words is "three million, seven hundred eighty-one thousand, two hundred twenty-five".