20252579 has 8 divisors (see below), whose sum is σ = 21472128. Its totient is φ = 19068480.

The previous prime is 20252543. The next prime is 20252611. The reversal of 20252579 is 97525202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20252579 - 2¹⁶ = 20187043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20252509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7682 + ... + 9975.

It is an arithmetic number, because the mean of its divisors is an integer number (2684016).

Almost surely, 2^20252579 is an apocalyptic number.

20252579 is a deficient number, since it is larger than the sum of its proper divisors (1219549).

20252579 is a wasteful number, since it uses less digits than its factorization.

20252579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17725.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 20252579 is about 4500.2865464323. The cubic root of 20252579 is about 272.5796596781.

The spelling of 20252579 in words is "twenty million, two hundred fifty-two thousand, five hundred seventy-nine".