40425769 has 2 divisors, whose sum is σ = 40425770. Its totient is φ = 40425768.

The previous prime is 40425761. The next prime is 40425799. The reversal of 40425769 is 96752404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25371369 + 15054400 = 5037^2 + 3880^2 .

It is a cyclic number.

It is not a de Polignac number, because 40425769 - 2³ = 40425761 is a prime.

It is a super-2 number, since 2×40425769² = 3268485598482722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40425761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212884 + 20212885.

It is an arithmetic number, because the mean of its divisors is an integer number (20212885).

Almost surely, 2^40425769 is an apocalyptic number.

It is an amenable number.

40425769 is a deficient number, since it is larger than the sum of its proper divisors (1).

40425769 is an equidigital number, since it uses as much as digits as its factorization.

40425769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 40425769 is about 6358.1262176839. The cubic root of 40425769 is about 343.2043338754.

The spelling of 40425769 in words is "forty million, four hundred twenty-five thousand, seven hundred sixty-nine".