16425457 has 2 divisors, whose sum is σ = 16425458. Its totient is φ = 16425456.

The previous prime is 16425449. The next prime is 16425499. The reversal of 16425457 is 75452461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16289296 + 136161 = 4036^2 + 369^2 .

It is a cyclic number.

It is not a de Polignac number, because 16425457 - 2³ = 16425449 is a prime.

It is not a weakly prime, because it can be changed into another prime (16425407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212728 + 8212729.

It is an arithmetic number, because the mean of its divisors is an integer number (8212729).

Almost surely, 2^16425457 is an apocalyptic number.

It is an amenable number.

16425457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16425457 is an equidigital number, since it uses as much as digits as its factorization.

16425457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 16425457 is about 4052.8332065359. The cubic root of 16425457 is about 254.1982095166.

The spelling of 16425457 in words is "sixteen million, four hundred twenty-five thousand, four hundred fifty-seven".