20251064 has 16 divisors (see below), whose sum is σ = 38023800. Its totient is φ = 10111392.

The previous prime is 20251061. The next prime is 20251079. The reversal of 20251064 is 46015202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20251061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6707 + ... + 9245.

Almost surely, 2^20251064 is an apocalyptic number.

It is an amenable number.

20251064 is a deficient number, since it is larger than the sum of its proper divisors (17772736).

20251064 is a wasteful number, since it uses less digits than its factorization.

20251064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542 (or 3538 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20251064 is about 4500.1182206693. The cubic root of 20251064 is about 272.5728627086.

Adding to 20251064 its reverse (46015202), we get a palindrome (66266266).

The spelling of 20251064 in words is "twenty million, two hundred fifty-one thousand, sixty-four".