40642025 has 12 divisors (see below), whose sum is σ = 50692812. Its totient is φ = 32322240.

The previous prime is 40642003. The next prime is 40642037. The reversal of 40642025 is 52024604.

40642025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2647129 + 37994896 = 1627^2 + 6164^2 .

It is not a de Polignac number, because 40642025 - 2¹⁰ = 40641001 is a prime.

It is a super-2 number, since 2×40642025² = 3303548392201250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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, 374 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (4224401).

Almost surely, 2^40642025 is an apocalyptic number.

It is an amenable number.

40642025 is a deficient number, since it is larger than the sum of its proper divisors (10050787).

40642025 is a wasteful number, since it uses less digits than its factorization.

40642025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580 (or 9575 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40642025 is about 6375.1098029759. The cubic root of 40642025 is about 343.8152316977.

Adding to 40642025 its reverse (52024604), we get a palindrome (92666629).

The spelling of 40642025 in words is "forty million, six hundred forty-two thousand, twenty-five".