20567025 has 72 divisors (see below), whose sum is σ = 41202720. Its totient is φ = 9745920.

The previous prime is 20567023. The next prime is 20567039. The reversal of 20567025 is 52076502.

It is not a de Polignac number, because 20567025 - 2¹ = 20567023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20567025.

It is not an unprimeable number, because it can be changed into a prime (20567023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 72534 + ... + 72816.

It is an arithmetic number, because the mean of its divisors is an integer number (572260).

Almost surely, 2^20567025 is an apocalyptic number.

20567025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20567025 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20567025 is a wasteful number, since it uses less digits than its factorization.

20567025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20567025 is about 4535.0882020089. The cubic root of 20567025 is about 273.9831316094.

The spelling of 20567025 in words is "twenty million, five hundred sixty-seven thousand, twenty-five".