1255450445 has 4 divisors (see below), whose sum is σ = 1506540540. Its totient is φ = 1004360352.

The previous prime is 1255450433. The next prime is 1255450451. The reversal of 1255450445 is 5440545521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 758561764 + 496888681 = 27542^2 + 22291^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255450445 - 2²² = 1251256141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125545040 + ... + 125545049.

It is an arithmetic number, because the mean of its divisors is an integer number (376635135).

Almost surely, 2^1255450445 is an apocalyptic number.

It is an amenable number.

1255450445 is a deficient number, since it is larger than the sum of its proper divisors (251090095).

1255450445 is an equidigital number, since it uses as much as digits as its factorization.

1255450445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251090094.

The product of its (nonzero) digits is 80000, while the sum is 35.

The square root of 1255450445 is about 35432.3361493425. The cubic root of 1255450445 is about 1078.7807585710.

Adding to 1255450445 its reverse (5440545521), we get a palindrome (6695995966).

The spelling of 1255450445 in words is "one billion, two hundred fifty-five million, four hundred fifty thousand, four hundred forty-five".