64025631 has 12 divisors (see below), whose sum is σ = 92553552. Its totient is φ = 42650496.

The previous prime is 64025623. The next prime is 64025657. The reversal of 64025631 is 13652046.

64025631 is a `hidden beast` number, since 6 + 4 + 0 + 25 + 631 = 666.

It is not a de Polignac number, because 64025631 - 2³ = 64025623 is a prime.

It is a super-2 number, since 2×64025631² = 8198562849896322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64025595 and 64025604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64025671) 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, 16390 + ... + 19916.

It is an arithmetic number, because the mean of its divisors is an integer number (7712796).

Almost surely, 2^64025631 is an apocalyptic number.

64025631 is a deficient number, since it is larger than the sum of its proper divisors (28527921).

64025631 is a wasteful number, since it uses less digits than its factorization.

64025631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550 (or 5547 counting only the distinct ones).

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

The square root of 64025631 is about 8001.6017771444. The cubic root of 64025631 is about 400.0533907899.

Adding to 64025631 its reverse (13652046), we get a palindrome (77677677).

The spelling of 64025631 in words is "sixty-four million, twenty-five thousand, six hundred thirty-one".