1225271743 has 6 divisors (see below), whose sum is σ = 1235011776. Its totient is φ = 1215607932.

The previous prime is 1225271731. The next prime is 1225271777. The reversal of 1225271743 is 3471725221.

It is not a de Polignac number, because 1225271743 - 2⁵ = 1225271711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225271699 and 1225271708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225271783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21855 + ... + 54112.

It is an arithmetic number, because the mean of its divisors is an integer number (205835296).

Almost surely, 2^1225271743 is an apocalyptic number.

1225271743 is a deficient number, since it is larger than the sum of its proper divisors (9740033).

1225271743 is an frugal number, since it uses more digits than its factorization.

1225271743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76221 (or 76094 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 1225271743 is about 35003.8818275916. The cubic root of 1225271743 is about 1070.0665935203.

Adding to 1225271743 its reverse (3471725221), we get a palindrome (4696996964).

The spelling of 1225271743 in words is "one billion, two hundred twenty-five million, two hundred seventy-one thousand, seven hundred forty-three".