1225510031 has 2 divisors, whose sum is σ = 1225510032. Its totient is φ = 1225510030.

The previous prime is 1225510003. The next prime is 1225510037. The reversal of 1225510031 is 1300155221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225510031 - 2³⁰ = 151768207 is a prime.

It is a super-2 number, since 2×1225510031² = 3003749672163241922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1225509985 and 1225510012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225510037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612755015 + 612755016.

It is an arithmetic number, because the mean of its divisors is an integer number (612755016).

Almost surely, 2^1225510031 is an apocalyptic number.

1225510031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225510031 is an equidigital number, since it uses as much as digits as its factorization.

1225510031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1225510031 is about 35007.2853988995. The cubic root of 1225510031 is about 1070.1359570451.

Adding to 1225510031 its reverse (1300155221), we get a palindrome (2525665252).

The spelling of 1225510031 in words is "one billion, two hundred twenty-five million, five hundred ten thousand, thirty-one".