3772525781 has 2 divisors, whose sum is σ = 3772525782. Its totient is φ = 3772525780.

The previous prime is 3772525763. The next prime is 3772525807. The reversal of 3772525781 is 1875252773.

3772525781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3714902500 + 57623281 = 60950^2 + 7591^2 .

It is an emirp because it is prime and its reverse (1875252773) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3772525781 is a prime.

It is a super-2 number, since 2×3772525781² = 28463901536619319922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3772525741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1886262890 + 1886262891.

It is an arithmetic number, because the mean of its divisors is an integer number (1886262891).

Almost surely, 2^3772525781 is an apocalyptic number.

It is an amenable number.

3772525781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3772525781 is an equidigital number, since it uses as much as digits as its factorization.

3772525781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823200, while the sum is 47.

The square root of 3772525781 is about 61420.8904282574. The cubic root of 3772525781 is about 1556.7208378077.

The spelling of 3772525781 in words is "three billion, seven hundred seventy-two million, five hundred twenty-five thousand, seven hundred eighty-one".