16425633025 has 6 divisors (see below), whose sum is σ = 20367784982. Its totient is φ = 13140506400.

The previous prime is 16425633017. The next prime is 16425633047. The reversal of 16425633025 is 52033652461.

It can be written as a sum of positive squares in 3 ways, for example, as 3817262656 + 12608370369 = 61784^2 + 112287^2 .

It is not a de Polignac number, because 16425633025 - 2³ = 16425633017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 328512636 + ... + 328512685.

Almost surely, 2^16425633025 is an apocalyptic number.

It is an amenable number.

16425633025 is a deficient number, since it is larger than the sum of its proper divisors (3942151957).

16425633025 is an equidigital number, since it uses as much as digits as its factorization.

16425633025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657025331 (or 657025326 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 16425633025 in words is "sixteen billion, four hundred twenty-five million, six hundred thirty-three thousand, twenty-five".