40838347225 has 27 divisors (see below), whose sum is σ = 54852185943. Its totient is φ = 30147848640.

The previous prime is 40838347217. The next prime is 40838347237. The reversal of 40838347225 is 52274383804.

The square root of 40838347225 is 202085.

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

40838347225 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 13 ways, for example, as 40448047689 + 390299536 = 201117^2 + 19756^2 .

It is not a de Polignac number, because 40838347225 - 2³ = 40838347217 is a prime.

It is a Duffinian number.

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, 13133971 + ... + 13137079.

Almost surely, 2^40838347225 is an apocalyptic number.

40838347225 is the 202085-th square number.

40838347225 is the 101043-rd centered octagonal number.

It is an amenable number.

40838347225 is a deficient number, since it is larger than the sum of its proper divisors (14013838718).

40838347225 is an frugal number, since it uses more digits than its factorization.

40838347225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6254 (or 3127 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 46.

The spelling of 40838347225 in words is "forty billion, eight hundred thirty-eight million, three hundred forty-seven thousand, two hundred twenty-five".