3625461643 has 2 divisors, whose sum is σ = 3625461644. Its totient is φ = 3625461642.

The previous prime is 3625461629. The next prime is 3625461659. The reversal of 3625461643 is 3461645263.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3625461643 - 2¹³ = 3625453451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3625461596 and 3625461605.

It is not a weakly prime, because it can be changed into another prime (3625461673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1812730821 + 1812730822.

It is an arithmetic number, because the mean of its divisors is an integer number (1812730822).

Almost surely, 2^3625461643 is an apocalyptic number.

3625461643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3625461643 is an equidigital number, since it uses as much as digits as its factorization.

3625461643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 40.

The square root of 3625461643 is about 60211.8065083585. The cubic root of 3625461643 is about 1536.2236198937.

The spelling of 3625461643 in words is "three billion, six hundred twenty-five million, four hundred sixty-one thousand, six hundred forty-three".