40042011025 has 27 divisors (see below), whose sum is σ = 51345212859. Its totient is φ = 30976254000.

The previous prime is 40042011001. The next prime is 40042011041. The reversal of 40042011025 is 52011024004.

The square root of 40042011025 is 200105.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14415123969 + 25626887056 = 120063^2 + 160084^2 .

It is not a de Polignac number, because 40042011025 - 2¹¹ = 40042008977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40042010993 and 40042011011.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 31015630 + ... + 31016920.

Almost surely, 2^40042011025 is an apocalyptic number.

40042011025 is the 200105-th square number.

40042011025 is the 100053-rd centered octagonal number.

It is an amenable number.

40042011025 is a deficient number, since it is larger than the sum of its proper divisors (11303201834).

40042011025 is an frugal number, since it uses more digits than its factorization.

40042011025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654 (or 1327 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 40042011025 its reverse (52011024004), we get a palindrome (92053035029).

The spelling of 40042011025 in words is "forty billion, forty-two million, eleven thousand, twenty-five".