3261147225 has 36 divisors (see below), whose sum is σ = 6272058384. Its totient is φ = 1490808480.

The previous prime is 3261147209. The next prime is 3261147229. The reversal of 3261147225 is 5227411623.

It is not a de Polignac number, because 3261147225 - 2⁴ = 3261147209 is a prime.

It is a super-4 number, since 4×3261147225⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (3261147229) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 440019 + ... + 447368.

It is an arithmetic number, because the mean of its divisors is an integer number (174223844).

Almost surely, 2^3261147225 is an apocalyptic number.

3261147225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3261147225 is a deficient number, since it is larger than the sum of its proper divisors (3010911159).

3261147225 is a wasteful number, since it uses less digits than its factorization.

3261147225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887414 (or 887402 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 3261147225 is about 57106.4551955381. The cubic root of 3261147225 is about 1482.9396201500.

Adding to 3261147225 its reverse (5227411623), we get a palindrome (8488558848).

The spelling of 3261147225 in words is "three billion, two hundred sixty-one million, one hundred forty-seven thousand, two hundred twenty-five".