40225811 has 2 divisors, whose sum is σ = 40225812. Its totient is φ = 40225810.

The previous prime is 40225807. The next prime is 40225841. The reversal of 40225811 is 11852204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40225811 - 2² = 40225807 is a prime.

It is not a weakly prime, because it can be changed into another prime (40225841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20112905 + 20112906.

It is an arithmetic number, because the mean of its divisors is an integer number (20112906).

Almost surely, 2^40225811 is an apocalyptic number.

40225811 is a deficient number, since it is larger than the sum of its proper divisors (1).

40225811 is an equidigital number, since it uses as much as digits as its factorization.

40225811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 40225811 is about 6342.3821234612. The cubic root of 40225811 is about 342.6375344067.

The spelling of 40225811 in words is "forty million, two hundred twenty-five thousand, eight hundred eleven".