16987025 has 24 divisors (see below), whose sum is σ = 23165184. Its totient is φ = 12254400.

The previous prime is 16987001. The next prime is 16987049. The reversal of 16987025 is 52078961.

It is an interprime number because it is at equal distance from previous prime (16987001) and next prime (16987049).

It is not a de Polignac number, because 16987025 - 2⁸ = 16986769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16987025.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61187 + ... + 61463.

It is an arithmetic number, because the mean of its divisors is an integer number (965216).

Almost surely, 2^16987025 is an apocalyptic number.

It is an amenable number.

16987025 is a deficient number, since it is larger than the sum of its proper divisors (6178159).

16987025 is a wasteful number, since it uses less digits than its factorization.

16987025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 16987025 is about 4121.5318754075. The cubic root of 16987025 is about 257.0627259874.

It can be divided in two parts, 169 and 87025, that multiplied together give a square (14707225 = 3835²).

The spelling of 16987025 in words is "sixteen million, nine hundred eighty-seven thousand, twenty-five".