3256612421 has 2 divisors, whose sum is σ = 3256612422. Its totient is φ = 3256612420.

The previous prime is 3256612409. The next prime is 3256612433. The reversal of 3256612421 is 1242166523.

3256612421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (3256612409) and next prime (3256612433).

It can be written as a sum of positive squares in only one way, i.e., 3202428100 + 54184321 = 56590^2 + 7361^2 .

It is a cyclic number.

It is not a de Polignac number, because 3256612421 - 2⁶ = 3256612357 is a prime.

It is a super-2 number, since 2×3256612421² = 21211048921222962482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3256662421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1628306210 + 1628306211.

It is an arithmetic number, because the mean of its divisors is an integer number (1628306211).

Almost surely, 2^3256612421 is an apocalyptic number.

It is an amenable number.

3256612421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3256612421 is an equidigital number, since it uses as much as digits as its factorization.

3256612421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 3256612421 is about 57066.7365546690. The cubic root of 3256612421 is about 1482.2519316820.

Adding to 3256612421 its reverse (1242166523), we get a palindrome (4498778944).

The spelling of 3256612421 in words is "three billion, two hundred fifty-six million, six hundred twelve thousand, four hundred twenty-one".