1225440371 has 2 divisors, whose sum is σ = 1225440372. Its totient is φ = 1225440370.

The previous prime is 1225440367. The next prime is 1225440467. The reversal of 1225440371 is 1730445221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225440371 - 2² = 1225440367 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225440341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612720185 + 612720186.

It is an arithmetic number, because the mean of its divisors is an integer number (612720186).

Almost surely, 2^1225440371 is an apocalyptic number.

1225440371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225440371 is an equidigital number, since it uses as much as digits as its factorization.

1225440371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1225440371 is about 35006.2904490036. The cubic root of 1225440371 is about 1070.1156805666.

Adding to 1225440371 its reverse (1730445221), we get a palindrome (2955885592).

It can be divided in two parts, 12254 and 40371, that added together give a palindrome (52625).

The spelling of 1225440371 in words is "one billion, two hundred twenty-five million, four hundred forty thousand, three hundred seventy-one".