6405253237 has 2 divisors, whose sum is σ = 6405253238. Its totient is φ = 6405253236.

The previous prime is 6405253223. The next prime is 6405253243. The reversal of 6405253237 is 7323525046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4458767076 + 1946486161 = 66774^2 + 44119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6405253237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6405253196 and 6405253205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6405253207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202626618 + 3202626619.

It is an arithmetic number, because the mean of its divisors is an integer number (3202626619).

Almost surely, 2^6405253237 is an apocalyptic number.

It is an amenable number.

6405253237 is a deficient number, since it is larger than the sum of its proper divisors (1).

6405253237 is an equidigital number, since it uses as much as digits as its factorization.

6405253237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 37.

The square root of 6405253237 is about 80032.8259965872. The cubic root of 6405253237 is about 1857.1433813160.

Subtracting 6405253237 from its reverse (7323525046), we obtain a square (918271809 = 30303²).

The spelling of 6405253237 in words is "six billion, four hundred five million, two hundred fifty-three thousand, two hundred thirty-seven".