3966725553 has 32 divisors (see below), whose sum is σ = 6148905984. Its totient is φ = 2227718592.

The previous prime is 3966725527. The next prime is 3966725573. The reversal of 3966725553 is 3555276693.

It is not a de Polignac number, because 3966725553 - 2⁹ = 3966725041 is a prime.

It is a super-2 number, since 2×3966725553² = 31469823225646311618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3966725496 and 3966725505.

It is not an unprimeable number, because it can be changed into a prime (3966725573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 654051 + ... + 660087.

It is an arithmetic number, because the mean of its divisors is an integer number (192153312).

Almost surely, 2^3966725553 is an apocalyptic number.

It is an amenable number.

3966725553 is a deficient number, since it is larger than the sum of its proper divisors (2182180431).

3966725553 is a wasteful number, since it uses less digits than its factorization.

3966725553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581.

The product of its digits is 5103000, while the sum is 51.

The square root of 3966725553 is about 62981.9462465237. The cubic root of 3966725553 is about 1582.9871323396.

The spelling of 3966725553 in words is "three billion, nine hundred sixty-six million, seven hundred twenty-five thousand, five hundred fifty-three".