20392025 has 6 divisors (see below), whose sum is σ = 25286142. Its totient is φ = 16313600.

The previous prime is 20392013. The next prime is 20392037. The reversal of 20392025 is 52029302.

It is an interprime number because it is at equal distance from previous prime (20392013) and next prime (20392037).

It can be written as a sum of positive squares in 3 ways, for example, as 3655744 + 16736281 = 1912^2 + 4091^2 .

It is not a de Polignac number, because 20392025 - 2¹⁶ = 20326489 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, 407816 + ... + 407865.

It is an arithmetic number, because the mean of its divisors is an integer number (4214357).

Almost surely, 2^20392025 is an apocalyptic number.

20392025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20392025 is a deficient number, since it is larger than the sum of its proper divisors (4894117).

20392025 is an equidigital number, since it uses as much as digits as its factorization.

20392025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815691 (or 815686 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20392025 is about 4515.7529826154. The cubic root of 20392025 is about 273.2038310120.

The spelling of 20392025 in words is "twenty million, three hundred ninety-two thousand, twenty-five".