3216567725 has 24 divisors (see below), whose sum is σ = 4591164480. Its totient is φ = 2189761920.

The previous prime is 3216567709. The next prime is 3216567727. The reversal of 3216567725 is 5277656123.

It is not a de Polignac number, because 3216567725 - 2⁴ = 3216567709 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216567727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41792 + ... + 90441.

It is an arithmetic number, because the mean of its divisors is an integer number (191298520).

Almost surely, 2^3216567725 is an apocalyptic number.

3216567725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3216567725 is a deficient number, since it is larger than the sum of its proper divisors (1374596755).

3216567725 is a wasteful number, since it uses less digits than its factorization.

3216567725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132389 (or 132384 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The square root of 3216567725 is about 56714.7928233896. The cubic root of 3216567725 is about 1476.1513905583.

The spelling of 3216567725 in words is "three billion, two hundred sixteen million, five hundred sixty-seven thousand, seven hundred twenty-five".