32440025 has 6 divisors (see below), whose sum is σ = 40225662. Its totient is φ = 25952000.

The previous prime is 32440003. The next prime is 32440039. The reversal of 32440025 is 52004423.

It can be written as a sum of positive squares in 3 ways, for example, as 6927424 + 25512601 = 2632^2 + 5051^2 .

It is not a de Polignac number, because 32440025 - 2¹² = 32435929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32439979 and 32440006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 648776 + ... + 648825.

It is an arithmetic number, because the mean of its divisors is an integer number (6704277).

Almost surely, 2^32440025 is an apocalyptic number.

It is an amenable number.

32440025 is a deficient number, since it is larger than the sum of its proper divisors (7785637).

32440025 is a wasteful number, since it uses less digits than its factorization.

32440025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297611 (or 1297606 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 32440025 is about 5695.6145410307. The cubic root of 32440025 is about 318.9287911469.

Adding to 32440025 its reverse (52004423), we get a palindrome (84444448).

The spelling of 32440025 in words is "thirty-two million, four hundred forty thousand, twenty-five".