16425971 has 2 divisors, whose sum is σ = 16425972. Its totient is φ = 16425970.

The previous prime is 16425967. The next prime is 16425991. The reversal of 16425971 is 17952461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16425971 - 2² = 16425967 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16425991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212985 + 8212986.

It is an arithmetic number, because the mean of its divisors is an integer number (8212986).

Almost surely, 2^16425971 is an apocalyptic number.

16425971 is a deficient number, since it is larger than the sum of its proper divisors (1).

16425971 is an equidigital number, since it uses as much as digits as its factorization.

16425971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 16425971 is about 4052.8966184693. The cubic root of 16425971 is about 254.2008610210.

The spelling of 16425971 in words is "sixteen million, four hundred twenty-five thousand, nine hundred seventy-one".