1225234251 has 24 divisors (see below), whose sum is σ = 1875654144. Its totient is φ = 768049920.

The previous prime is 1225234189. The next prime is 1225234259. The reversal of 1225234251 is 1524325221.

It is not a de Polignac number, because 1225234251 - 2⁶ = 1225234187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225234259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192246 + ... + 198516.

It is an arithmetic number, because the mean of its divisors is an integer number (78152256).

Almost surely, 2^1225234251 is an apocalyptic number.

1225234251 is a deficient number, since it is larger than the sum of its proper divisors (650419893).

1225234251 is a wasteful number, since it uses less digits than its factorization.

1225234251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571 (or 7568 counting only the distinct ones).

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

The square root of 1225234251 is about 35003.3462828913. The cubic root of 1225234251 is about 1070.0556791127.

Adding to 1225234251 its reverse (1524325221), we get a palindrome (2749559472).

The spelling of 1225234251 in words is "one billion, two hundred twenty-five million, two hundred thirty-four thousand, two hundred fifty-one".