3145161225 has 12 divisors (see below), whose sum is σ = 5200000016. Its totient is φ = 1677419280.

The previous prime is 3145161221. The next prime is 3145161251. The reversal of 3145161225 is 5221615413.

It is not a de Polignac number, because 3145161225 - 2² = 3145161221 is a prime.

It is a super-3 number, since 3×3145161225³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3145161192 and 3145161201.

It is not an unprimeable number, because it can be changed into a prime (3145161221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20967667 + ... + 20967816.

Almost surely, 2^3145161225 is an apocalyptic number.

It is an amenable number.

3145161225 is a deficient number, since it is larger than the sum of its proper divisors (2054838791).

3145161225 is a wasteful number, since it uses less digits than its factorization.

3145161225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41935496 (or 41935491 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 3145161225 is about 56081.7370005602. The cubic root of 3145161225 is about 1465.1462266727.

Adding to 3145161225 its reverse (5221615413), we get a palindrome (8366776638).

The spelling of 3145161225 in words is "three billion, one hundred forty-five million, one hundred sixty-one thousand, two hundred twenty-five".