40425851 has 2 divisors, whose sum is σ = 40425852. Its totient is φ = 40425850.

The previous prime is 40425841. The next prime is 40425893. The reversal of 40425851 is 15852404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40425851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40425821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212925 + 20212926.

It is an arithmetic number, because the mean of its divisors is an integer number (20212926).

Almost surely, 2^40425851 is an apocalyptic number.

40425851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40425851 is an equidigital number, since it uses as much as digits as its factorization.

40425851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 40425851 is about 6358.1326661214. The cubic root of 40425851 is about 343.2045659282.

The spelling of 40425851 in words is "forty million, four hundred twenty-five thousand, eight hundred fifty-one".