1225022015 has 16 divisors (see below), whose sum is σ = 1708508160. Its totient is φ = 825776160.

The previous prime is 1225021997. The next prime is 1225022041. The reversal of 1225022015 is 5102205221.

It is a happy number.

It is not a de Polignac number, because 1225022015 - 2¹² = 1225017919 is a prime.

It is a congruent number.

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, 294551 + ... + 298680.

It is an arithmetic number, because the mean of its divisors is an integer number (106781760).

Almost surely, 2^1225022015 is an apocalyptic number.

1225022015 is a deficient number, since it is larger than the sum of its proper divisors (483486145).

1225022015 is an equidigital number, since it uses as much as digits as its factorization.

1225022015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593302.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1225022015 is about 35000.3144985870. The cubic root of 1225022015 is about 1069.9938902612.

Adding to 1225022015 its reverse (5102205221), we get a palindrome (6327227236).

The spelling of 1225022015 in words is "one billion, two hundred twenty-five million, twenty-two thousand, fifteen".