1225114521 has 4 divisors (see below), whose sum is σ = 1633486032. Its totient is φ = 816743012.

The previous prime is 1225114487. The next prime is 1225114531. The reversal of 1225114521 is 1254115221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1225114521 - 2⁷ = 1225114393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225114491 and 1225114500.

It is not an unprimeable number, because it can be changed into a prime (1225114531) 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 3 ways as a sum of consecutive naturals, for example, 204185751 + ... + 204185756.

It is an arithmetic number, because the mean of its divisors is an integer number (408371508).

Almost surely, 2^1225114521 is an apocalyptic number.

It is an amenable number.

1225114521 is a deficient number, since it is larger than the sum of its proper divisors (408371511).

1225114521 is an equidigital number, since it uses as much as digits as its factorization.

1225114521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408371510.

The product of its digits is 800, while the sum is 24.

The square root of 1225114521 is about 35001.6359760512. The cubic root of 1225114521 is about 1070.0208226652.

Adding to 1225114521 its reverse (1254115221), we get a palindrome (2479229742).

The spelling of 1225114521 in words is "one billion, two hundred twenty-five million, one hundred fourteen thousand, five hundred twenty-one".