20252305 has 16 divisors (see below), whose sum is σ = 25784064. Its totient is φ = 15238080.

The previous prime is 20252293. The next prime is 20252311. The reversal of 20252305 is 50325202.

It is not a de Polignac number, because 20252305 - 2⁵ = 20252273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5572 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (1611504).

Almost surely, 2^20252305 is an apocalyptic number.

It is an amenable number.

20252305 is a deficient number, since it is larger than the sum of its proper divisors (5531759).

20252305 is a wasteful number, since it uses less digits than its factorization.

20252305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20252305 is about 4500.2561038234. The cubic root of 20252305 is about 272.5784304163.

Adding to 20252305 its reverse (50325202), we get a palindrome (70577507).

The spelling of 20252305 in words is "twenty million, two hundred fifty-two thousand, three hundred five".