6425631 has 12 divisors (see below), whose sum is σ = 9439560. Its totient is φ = 4210800.

The previous prime is 6425621. The next prime is 6425641. The reversal of 6425631 is 1365246.

6425631 is a `hidden beast` number, since 6 + 4 + 25 + 631 = 666.

It is an interprime number because it is at equal distance from previous prime (6425621) and next prime (6425641).

It is not a de Polignac number, because 6425631 - 2⁵ = 6425599 is a prime.

It is a super-2 number, since 2×6425631² = 82577467496322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6425595 and 6425604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5520 + ... + 6581.

It is an arithmetic number, because the mean of its divisors is an integer number (786630).

Almost surely, 2^6425631 is an apocalyptic number.

6425631 is a deficient number, since it is larger than the sum of its proper divisors (3013929).

6425631 is a wasteful number, since it uses less digits than its factorization.

6425631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12166 (or 12163 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6425631 is about 2534.8828375292. The cubic root of 6425631 is about 185.9110743840.

It can be divided in two parts, 6425 and 631, that added together give a square (7056 = 84²).

The spelling of 6425631 in words is "six million, four hundred twenty-five thousand, six hundred thirty-one".