1210420525 has 6 divisors (see below), whose sum is σ = 1500921482. Its totient is φ = 968336400.

The previous prime is 1210420511. The next prime is 1210420529. The reversal of 1210420525 is 5250240121.

It can be written as a sum of positive squares in 3 ways, for example, as 285156 + 1210135369 = 534^2 + 34787^2 .

It is not a de Polignac number, because 1210420525 - 2⁵ = 1210420493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210420496 and 1210420505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210420529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24208386 + ... + 24208435.

Almost surely, 2^1210420525 is an apocalyptic number.

It is an amenable number.

1210420525 is a deficient number, since it is larger than the sum of its proper divisors (290500957).

1210420525 is an equidigital number, since it uses as much as digits as its factorization.

1210420525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48416831 (or 48416826 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1210420525 is about 34791.0983586319. The cubic root of 1210420525 is about 1065.7256694052.

Adding to 1210420525 its reverse (5250240121), we get a palindrome (6460660646).

The spelling of 1210420525 in words is "one billion, two hundred ten million, four hundred twenty thousand, five hundred twenty-five".