4040404025 has 36 divisors (see below), whose sum is σ = 6170936508. Its totient is φ = 2607575040.

The previous prime is 4040404019. The next prime is 4040404031. The reversal of 4040404025 is 5204040404.

It is an interprime number because it is at equal distance from previous prime (4040404019) and next prime (4040404031).

It can be written as a sum of positive squares in 6 ways, for example, as 391881616 + 3648522409 = 19796^2 + 60403^2 .

It is not a de Polignac number, because 4040404025 - 2⁴ = 4040404009 is a prime.

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 (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76184 + ... + 117833.

It is an arithmetic number, because the mean of its divisors is an integer number (171414903).

Almost surely, 2^4040404025 is an apocalyptic number.

It is an amenable number.

4040404025 is a deficient number, since it is larger than the sum of its proper divisors (2130532483).

4040404025 is a wasteful number, since it uses less digits than its factorization.

4040404025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194058 (or 194046 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 4040404025 is about 63564.1724952036. The cubic root of 4040404025 is about 1592.7279390349.

Adding to 4040404025 its reverse (5204040404), we get a palindrome (9244444429).

The spelling of 4040404025 in words is "four billion, forty million, four hundred four thousand, twenty-five".