40245025 has 6 divisors (see below), whose sum is σ = 49903862. Its totient is φ = 32196000.

The previous prime is 40245017. The next prime is 40245047. The reversal of 40245025 is 52054204.

It can be written as a sum of positive squares in 3 ways, for example, as 10137856 + 30107169 = 3184^2 + 5487^2 .

It is not a de Polignac number, because 40245025 - 2³ = 40245017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40244987 and 40245005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804876 + ... + 804925.

Almost surely, 2^40245025 is an apocalyptic number.

It is an amenable number.

40245025 is a deficient number, since it is larger than the sum of its proper divisors (9658837).

40245025 is a wasteful number, since it uses less digits than its factorization.

40245025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609811 (or 1609806 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 40245025 is about 6343.8966731812. The cubic root of 40245025 is about 342.6920797306.

Adding to 40245025 its reverse (52054204), we get a palindrome (92299229).

The spelling of 40245025 in words is "forty million, two hundred forty-five thousand, twenty-five".