40402025 has 12 divisors (see below), whose sum is σ = 50330112. Its totient is φ = 32172240.

The previous prime is 40402009. The next prime is 40402027. The reversal of 40402025 is 52020404.

40402025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40402025 - 2⁴ = 40402009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40401994 and 40402012.

It is not an unprimeable number, because it can be changed into a prime (40402027) by changing a digit.

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, 1952 + ... + 9198.

It is an arithmetic number, because the mean of its divisors is an integer number (4194176).

Almost surely, 2^40402025 is an apocalyptic number.

It is an amenable number.

40402025 is a deficient number, since it is larger than the sum of its proper divisors (9928087).

40402025 is a wasteful number, since it uses less digits than its factorization.

40402025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480 (or 7475 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40402025 is about 6356.2587266410. The cubic root of 40402025 is about 343.1371272407.

Adding to 40402025 its reverse (52020404), we get a palindrome (92422429).

The spelling of 40402025 in words is "forty million, four hundred two thousand, twenty-five".