16905025 has 12 divisors (see below), whose sum is σ = 21217392. Its totient is φ = 13359440.

The previous prime is 16905017. The next prime is 16905043. The reversal of 16905025 is 52050961.

It is not a de Polignac number, because 16905025 - 2³ = 16905017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16904984 and 16905002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1999 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (1768116).

Almost surely, 2^16905025 is an apocalyptic number.

It is an amenable number.

16905025 is a deficient number, since it is larger than the sum of its proper divisors (4312367).

16905025 is an equidigital number, since it uses as much as digits as its factorization.

16905025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8240 (or 8235 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 16905025 is about 4111.5720837655. The cubic root of 16905025 is about 256.6484263944.

Adding to 16905025 its reverse (52050961), we get a palindrome (68955986).

The spelling of 16905025 in words is "sixteen million, nine hundred five thousand, twenty-five".