20570325 has 12 divisors (see below), whose sum is σ = 34009728. Its totient is φ = 10970800.

The previous prime is 20570321. The next prime is 20570351. The reversal of 20570325 is 52307502.

It is not a de Polignac number, because 20570325 - 2² = 20570321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20570295 and 20570304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20570321) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 137061 + ... + 137210.

It is an arithmetic number, because the mean of its divisors is an integer number (2834144).

Almost surely, 2^20570325 is an apocalyptic number.

20570325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20570325 is a deficient number, since it is larger than the sum of its proper divisors (13439403).

20570325 is a wasteful number, since it uses less digits than its factorization.

20570325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274284 (or 274279 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 20570325 is about 4535.4520171643. The cubic root of 20570325 is about 273.9977844494.

Adding to 20570325 its reverse (52307502), we get a palindrome (72877827).

The spelling of 20570325 in words is "twenty million, five hundred seventy thousand, three hundred twenty-five".