40406325 has 12 divisors (see below), whose sum is σ = 66805248. Its totient is φ = 21550000.

The previous prime is 40406321. The next prime is 40406329. The reversal of 40406325 is 52360404.

It is an interprime number because it is at equal distance from previous prime (40406321) and next prime (40406329).

It is not a de Polignac number, because 40406325 - 2² = 40406321 is a prime.

It is a super-2 number, since 2×40406325² = 3265342200011250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40406295 and 40406304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40406321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269301 + ... + 269450.

It is an arithmetic number, because the mean of its divisors is an integer number (5567104).

Almost surely, 2^40406325 is an apocalyptic number.

It is an amenable number.

40406325 is a deficient number, since it is larger than the sum of its proper divisors (26398923).

40406325 is a wasteful number, since it uses less digits than its factorization.

40406325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538764 (or 538759 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 40406325 is about 6356.5969669313. The cubic root of 40406325 is about 343.1493002057.

Adding to 40406325 its reverse (52360404), we get a palindrome (92766729).

The spelling of 40406325 in words is "forty million, four hundred six thousand, three hundred twenty-five".