40925191 has 2 divisors, whose sum is σ = 40925192. Its totient is φ = 40925190.

The previous prime is 40925189. The next prime is 40925201. The reversal of 40925191 is 19152904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40925191 - 2¹ = 40925189 is a prime.

Together with 40925189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40925111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20462595 + 20462596.

It is an arithmetic number, because the mean of its divisors is an integer number (20462596).

Almost surely, 2^40925191 is an apocalyptic number.

40925191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40925191 is an equidigital number, since it uses as much as digits as its factorization.

40925191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 40925191 is about 6397.2799688618. The cubic root of 40925191 is about 344.6118746615.

It can be divided in two parts, 409 and 25191, that added together give a square (25600 = 160²).

The spelling of 40925191 in words is "forty million, nine hundred twenty-five thousand, one hundred ninety-one".