20255002 has 4 divisors (see below), whose sum is σ = 30382506. Its totient is φ = 10127500.

The previous prime is 20254999. The next prime is 20255003. The reversal of 20255002 is 20055202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18241441 + 2013561 = 4271^2 + 1419^2 .

It is not an unprimeable number, because it can be changed into a prime (20255003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063749 + ... + 5063752.

Almost surely, 2^20255002 is an apocalyptic number.

20255002 is a deficient number, since it is larger than the sum of its proper divisors (10127504).

20255002 is a wasteful number, since it uses less digits than its factorization.

20255002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10127503.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 20255002 is about 4500.5557434610. Note that the first 3 decimals coincide. The cubic root of 20255002 is about 272.5905296382.

Adding to 20255002 its product of nonzero digits (200), we get a palindrome (20255202).

The spelling of 20255002 in words is "twenty million, two hundred fifty-five thousand, two".