6631636425 has 12 divisors (see below), whose sum is σ = 10964305680. Its totient is φ = 3536872720.

The previous prime is 6631636397. The next prime is 6631636433. The reversal of 6631636425 is 5246361366.

It is a happy number.

6631636425 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6631636425 - 2¹⁶ = 6631570889 is a prime.

It is a super-3 number, since 3×6631636425³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44210835 + ... + 44210984.

It is an arithmetic number, because the mean of its divisors is an integer number (913692140).

Almost surely, 2^6631636425 is an apocalyptic number.

It is an amenable number.

6631636425 is a deficient number, since it is larger than the sum of its proper divisors (4332669255).

6631636425 is a wasteful number, since it uses less digits than its factorization.

6631636425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88421832 (or 88421827 counting only the distinct ones).

The product of its digits is 466560, while the sum is 42.

The square root of 6631636425 is about 81434.8600109314. The cubic root of 6631636425 is about 1878.7697950866.

The spelling of 6631636425 in words is "six billion, six hundred thirty-one million, six hundred thirty-six thousand, four hundred twenty-five".