3725818381 has 2 divisors, whose sum is σ = 3725818382. Its totient is φ = 3725818380.

The previous prime is 3725818363. The next prime is 3725818387. The reversal of 3725818381 is 1838185273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1994426281 + 1731392100 = 44659^2 + 41610^2 .

It is a cyclic number.

It is not a de Polignac number, because 3725818381 - 2²³ = 3717429773 is a prime.

It is a super-2 number, since 2×3725818381² = 27763445216394922322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3725818387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1862909190 + 1862909191.

It is an arithmetic number, because the mean of its divisors is an integer number (1862909191).

Almost surely, 2^3725818381 is an apocalyptic number.

It is an amenable number.

3725818381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3725818381 is an equidigital number, since it uses as much as digits as its factorization.

3725818381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 3725818381 is about 61039.4821488518. The cubic root of 3725818381 is about 1550.2695862690.

The spelling of 3725818381 in words is "three billion, seven hundred twenty-five million, eight hundred eighteen thousand, three hundred eighty-one".