32640425 has 12 divisors (see below), whose sum is σ = 42855516. Its totient is φ = 24576000.

The previous prime is 32640407. The next prime is 32640431. The reversal of 32640425 is 52404623.

It can be written as a sum of positive squares in 6 ways, for example, as 3003289 + 29637136 = 1733^2 + 5444^2 .

It is not a de Polignac number, because 32640425 - 2¹⁴ = 32624041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32640394 and 32640403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37976 + ... + 38825.

It is an arithmetic number, because the mean of its divisors is an integer number (3571293).

Almost surely, 2^32640425 is an apocalyptic number.

It is an amenable number.

32640425 is a deficient number, since it is larger than the sum of its proper divisors (10215091).

32640425 is a wasteful number, since it uses less digits than its factorization.

32640425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76828 (or 76823 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 32640425 is about 5713.1799376529. The cubic root of 32640425 is about 319.5841766902.

The spelling of 32640425 in words is "thirty-two million, six hundred forty thousand, four hundred twenty-five".