1255752445 has 4 divisors (see below), whose sum is σ = 1506902940. Its totient is φ = 1004601952.

The previous prime is 1255752437. The next prime is 1255752451. The reversal of 1255752445 is 5442575521.

It is a happy number.

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 517380516 + 738371929 = 22746^2 + 27173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255752445 - 2³ = 1255752437 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1255752398 and 1255752407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125575240 + ... + 125575249.

It is an arithmetic number, because the mean of its divisors is an integer number (376725735).

Almost surely, 2^1255752445 is an apocalyptic number.

It is an amenable number.

1255752445 is a deficient number, since it is larger than the sum of its proper divisors (251150495).

1255752445 is an equidigital number, since it uses as much as digits as its factorization.

1255752445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251150494.

The product of its digits is 280000, while the sum is 40.

The square root of 1255752445 is about 35436.5975370097. The cubic root of 1255752445 is about 1078.8672522728.

The spelling of 1255752445 in words is "one billion, two hundred fifty-five million, seven hundred fifty-two thousand, four hundred forty-five".