20295025 has 27 divisors (see below), whose sum is σ = 27247171. Its totient is φ = 14992640.

The previous prime is 20295013. The next prime is 20295047. The reversal of 20295025 is 52059202.

The square root of 20295025 is 4505.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 3122289 + 17172736 = 1767^2 + 4144^2 .

It is not a de Polignac number, because 20295025 - 2¹⁵ = 20262257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 382899 + ... + 382951.

Almost surely, 2^20295025 is an apocalyptic number.

20295025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20295025 is the 4505-th square number.

20295025 is the 2253-rd centered octagonal number.

It is an amenable number.

20295025 is a deficient number, since it is larger than the sum of its proper divisors (6952146).

20295025 is an equidigital number, since it uses as much as digits as its factorization.

20295025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The cubic root of 20295025 is about 272.7699538421.

Multiplying 20295025 by its sum of digits (25), we get a square (507375625 = 22525²).

20295025 divided by its sum of digits (25) gives a square (811801 = 901²).

The spelling of 20295025 in words is "twenty million, two hundred ninety-five thousand, twenty-five".