40185525 has 24 divisors (see below), whose sum is σ = 66942144. Its totient is φ = 21270400.

The previous prime is 40185511. The next prime is 40185527. The reversal of 40185525 is 52558104.

It is not a de Polignac number, because 40185525 - 2⁵ = 40185493 is a prime.

It is a super-2 number, since 2×40185525² = 3229752839051250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40185492 and 40185501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40185527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8320 + ... + 12230.

It is an arithmetic number, because the mean of its divisors is an integer number (2789256).

Almost surely, 2^40185525 is an apocalyptic number.

It is an amenable number.

40185525 is a deficient number, since it is larger than the sum of its proper divisors (26756619).

40185525 is a wasteful number, since it uses less digits than its factorization.

40185525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061 (or 4056 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 40185525 is about 6339.2053918453. The cubic root of 40185525 is about 342.5231127955.

The spelling of 40185525 in words is "forty million, one hundred eighty-five thousand, five hundred twenty-five".