210252415251 has 16 divisors (see below), whose sum is σ = 282378338048. Its totient is φ = 139148604000.

The previous prime is 210252415223. The next prime is 210252415297. The reversal of 210252415251 is 152514252012.

It is not a de Polignac number, because 210252415251 - 2⁷ = 210252415123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210252415151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541965 + ... + 845121.

It is an arithmetic number, because the mean of its divisors is an integer number (17648646128).

Almost surely, 2^210252415251 is an apocalyptic number.

210252415251 is a deficient number, since it is larger than the sum of its proper divisors (72125922797).

210252415251 is a wasteful number, since it uses less digits than its factorization.

210252415251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304842.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 210252415251 its reverse (152514252012), we get a palindrome (362766667263).

The spelling of 210252415251 in words is "two hundred ten billion, two hundred fifty-two million, four hundred fifteen thousand, two hundred fifty-one".