16201025 has 6 divisors (see below), whose sum is σ = 20089302. Its totient is φ = 12960800.

The previous prime is 16201013. The next prime is 16201049. The reversal of 16201025 is 52010261.

It can be written as a sum of positive squares in 3 ways, for example, as 5755201 + 10445824 = 2399^2 + 3232^2 .

It is not a de Polignac number, because 16201025 - 2²² = 12006721 is a prime.

It is a super-2 number, since 2×16201025² = 524946422101250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16200994 and 16201012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323996 + ... + 324045.

It is an arithmetic number, because the mean of its divisors is an integer number (3348217).

Almost surely, 2^16201025 is an apocalyptic number.

It is an amenable number.

16201025 is a deficient number, since it is larger than the sum of its proper divisors (3888277).

16201025 is an equidigital number, since it uses as much as digits as its factorization.

16201025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648051 (or 648046 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 16201025 is about 4025.0496891343. The cubic root of 16201025 is about 253.0351360118.

Adding to 16201025 its reverse (52010261), we get a palindrome (68211286).

It can be divided in two parts, 1 and 6201025, that added together give a palindrome (6201026).

The spelling of 16201025 in words is "sixteen million, two hundred one thousand, twenty-five".