16425229 has 2 divisors, whose sum is σ = 16425230. Its totient is φ = 16425228.

The previous prime is 16425221. The next prime is 16425259. The reversal of 16425229 is 92252461.

16425229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 4831204 = 3405^2 + 2198^2 .

It is a cyclic number.

It is not a de Polignac number, because 16425229 - 2³ = 16425221 is a prime.

It is equal to p_1056694 and since 16425229 and 1056694 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16425229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16425221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212614 + 8212615.

It is an arithmetic number, because the mean of its divisors is an integer number (8212615).

Almost surely, 2^16425229 is an apocalyptic number.

It is an amenable number.

16425229 is a deficient number, since it is larger than the sum of its proper divisors (1).

16425229 is an equidigital number, since it uses as much as digits as its factorization.

16425229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 16425229 is about 4052.8050779676. The cubic root of 16425229 is about 254.1970333451.

The spelling of 16425229 in words is "sixteen million, four hundred twenty-five thousand, two hundred twenty-nine".