1255212445 has 8 divisors (see below), whose sum is σ = 1506467160. Its totient is φ = 1004028480.

The previous prime is 1255212437. The next prime is 1255212449. The reversal of 1255212445 is 5442125521.

It can be written as a sum of positive squares in 4 ways, for example, as 327827236 + 927385209 = 18106^2 + 30453^2 .

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

It is not a de Polignac number, because 1255212445 - 2³ = 1255212437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255212449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36375 + ... + 61915.

It is an arithmetic number, because the mean of its divisors is an integer number (188308395).

Almost surely, 2^1255212445 is an apocalyptic number.

It is an amenable number.

1255212445 is a deficient number, since it is larger than the sum of its proper divisors (251254715).

1255212445 is an equidigital number, since it uses as much as digits as its factorization.

1255212445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35375.

The product of its digits is 16000, while the sum is 31.

The square root of 1255212445 is about 35428.9774760718. The cubic root of 1255212445 is about 1078.7125848868.

Adding to 1255212445 its reverse (5442125521), we get a palindrome (6697337966).

The spelling of 1255212445 in words is "one billion, two hundred fifty-five million, two hundred twelve thousand, four hundred forty-five".