1225403331 has 8 divisors (see below), whose sum is σ = 1656253200. Its totient is φ = 805744512.

The previous prime is 1225403321. The next prime is 1225403341. The reversal of 1225403331 is 1333045221.

It is an interprime number because it is at equal distance from previous prime (1225403321) and next prime (1225403341).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225403331 - 2²³ = 1217014723 is a prime.

It is a super-2 number, since 2×1225403331² = 3003226647251791122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225403321) 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 7 ways as a sum of consecutive naturals, for example, 2797506 + ... + 2797943.

It is an arithmetic number, because the mean of its divisors is an integer number (207031650).

Almost surely, 2^1225403331 is an apocalyptic number.

1225403331 is a deficient number, since it is larger than the sum of its proper divisors (430849869).

1225403331 is an equidigital number, since it uses as much as digits as its factorization.

1225403331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595525.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1225403331 is about 35005.7613972329. The cubic root of 1225403331 is about 1070.1048987326.

Adding to 1225403331 its reverse (1333045221), we get a palindrome (2558448552).

The spelling of 1225403331 in words is "one billion, two hundred twenty-five million, four hundred three thousand, three hundred thirty-one".