3221251405 has 8 divisors (see below), whose sum is σ = 3865807512. Its totient is φ = 2576797248.

The previous prime is 3221251381. The next prime is 3221251427. The reversal of 3221251405 is 5041521223.

It can be written as a sum of positive squares in 4 ways, for example, as 11009124 + 3210242281 = 3318^2 + 56659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221251405 - 2¹³ = 3221243213 is a prime.

It is a super-2 number, since 2×3221251405² = 20752921228428948050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221251405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102099 + ... + 129871.

It is an arithmetic number, because the mean of its divisors is an integer number (483225939).

Almost surely, 2^3221251405 is an apocalyptic number.

It is an amenable number.

3221251405 is a deficient number, since it is larger than the sum of its proper divisors (644556107).

3221251405 is a wasteful number, since it uses less digits than its factorization.

3221251405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50975.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3221251405 is about 56756.0693230248. The cubic root of 3221251405 is about 1476.8675232276.

Adding to 3221251405 its reverse (5041521223), we get a palindrome (8262772628).

The spelling of 3221251405 in words is "three billion, two hundred twenty-one million, two hundred fifty-one thousand, four hundred five".