405025427 has 2 divisors, whose sum is σ = 405025428. Its totient is φ = 405025426.

The previous prime is 405025403. The next prime is 405025433. The reversal of 405025427 is 724520504.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405025427 - 2²⁶ = 337916563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405025427.

It is not a weakly prime, because it can be changed into another prime (405025457) 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, 202512713 + 202512714.

It is an arithmetic number, because the mean of its divisors is an integer number (202512714).

Almost surely, 2^405025427 is an apocalyptic number.

405025427 is a deficient number, since it is larger than the sum of its proper divisors (1).

405025427 is an equidigital number, since it uses as much as digits as its factorization.

405025427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 405025427 is about 20125.2435264769. The cubic root of 405025427 is about 739.8791055244.

The spelling of 405025427 in words is "four hundred five million, twenty-five thousand, four hundred twenty-seven".