20572025 has 6 divisors (see below), whose sum is σ = 25509342. Its totient is φ = 16457600.

The previous prime is 20572009. The next prime is 20572033. The reversal of 20572025 is 52027502.

It can be written as a sum of positive squares in 3 ways, for example, as 1352569 + 19219456 = 1163^2 + 4384^2 .

It is not a de Polignac number, because 20572025 - 2⁴ = 20572009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411416 + ... + 411465.

It is an arithmetic number, because the mean of its divisors is an integer number (4251557).

Almost surely, 2^20572025 is an apocalyptic number.

20572025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20572025 is a deficient number, since it is larger than the sum of its proper divisors (4937317).

20572025 is an equidigital number, since it uses as much as digits as its factorization.

20572025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822891 (or 822886 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20572025 is about 4535.6394257039. The cubic root of 20572025 is about 274.0053322705.

Adding to 20572025 its reverse (52027502), we get a palindrome (72599527).

The spelling of 20572025 in words is "twenty million, five hundred seventy-two thousand, twenty-five".