20252635 has 16 divisors (see below), whose sum is σ = 26621280. Its totient is φ = 14699520.

The previous prime is 20252611. The next prime is 20252663. The reversal of 20252635 is 53625202.

It is not a de Polignac number, because 20252635 - 2¹⁵ = 20219867 is a prime.

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, 1195 + ... + 6475.

It is an arithmetic number, because the mean of its divisors is an integer number (1663830).

Almost surely, 2^20252635 is an apocalyptic number.

20252635 is a deficient number, since it is larger than the sum of its proper divisors (6368645).

20252635 is a wasteful number, since it uses less digits than its factorization.

20252635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20252635 is about 4500.2927682541. The cubic root of 20252635 is about 272.5799109127.

Adding to 20252635 its reverse (53625202), we get a palindrome (73877837).

The spelling of 20252635 in words is "twenty million, two hundred fifty-two thousand, six hundred thirty-five".