1225234215 has 16 divisors (see below), whose sum is σ = 2178194400. Its totient is φ = 653458176.

The previous prime is 1225234189. The next prime is 1225234259. The reversal of 1225234215 is 5124325221.

1225234215 is a `hidden beast` number, since 122 + 523 + 4 + 2 + 15 = 666.

It is not a de Polignac number, because 1225234215 - 2⁹ = 1225233703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 4537770 + ... + 4538039.

It is an arithmetic number, because the mean of its divisors is an integer number (136137150).

Almost surely, 2^1225234215 is an apocalyptic number.

1225234215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225234215 is a deficient number, since it is larger than the sum of its proper divisors (952960185).

1225234215 is an equidigital number, since it uses as much as digits as its factorization.

1225234215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075823 (or 9075817 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1225234215 is about 35003.3457686547. The cubic root of 1225234215 is about 1070.0556686325.

Adding to 1225234215 its reverse (5124325221), we get a palindrome (6349559436).

It can be divided in two parts, 1225234 and 215, that added together give a square (1225449 = 1107²).

The spelling of 1225234215 in words is "one billion, two hundred twenty-five million, two hundred thirty-four thousand, two hundred fifteen".