20850325 has 6 divisors (see below), whose sum is σ = 25854434. Its totient is φ = 16680240.

The previous prime is 20850311. The next prime is 20850331. The reversal of 20850325 is 52305802.

It can be written as a sum of positive squares in 3 ways, for example, as 1127844 + 19722481 = 1062^2 + 4441^2 .

It is not a de Polignac number, because 20850325 - 2⁵ = 20850293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 834013 = 20850325 / (2 + 0 + 8 + 5 + 0 + 3 + 2 + 5).

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 20850325.

It is a congruent number.

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, 416982 + ... + 417031.

Almost surely, 2^20850325 is an apocalyptic number.

20850325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20850325 is a deficient number, since it is larger than the sum of its proper divisors (5004109).

20850325 is an equidigital number, since it uses as much as digits as its factorization.

20850325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834023 (or 834018 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 20850325 is about 4566.2156103277. The cubic root of 20850325 is about 275.2353907425.

It can be divided in two parts, 208 and 50325, that multiplied together give a triangular number (10467600 = T₄₅₇₅).

The spelling of 20850325 in words is "twenty million, eight hundred fifty thousand, three hundred twenty-five".