1255379245 has 4 divisors (see below), whose sum is σ = 1506455100. Its totient is φ = 1004303392.

The previous prime is 1255379243. The next prime is 1255379249. The reversal of 1255379245 is 5429735521.

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 433180969 + 822198276 = 20813^2 + 28674^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255379245 - 2¹ = 1255379243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255379243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125537920 + ... + 125537929.

It is an arithmetic number, because the mean of its divisors is an integer number (376613775).

Almost surely, 2^1255379245 is an apocalyptic number.

It is an amenable number.

1255379245 is a deficient number, since it is larger than the sum of its proper divisors (251075855).

1255379245 is an equidigital number, since it uses as much as digits as its factorization.

1255379245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251075854.

The product of its digits is 378000, while the sum is 43.

The square root of 1255379245 is about 35431.3314031522. The cubic root of 1255379245 is about 1078.7603646578.

The spelling of 1255379245 in words is "one billion, two hundred fifty-five million, three hundred seventy-nine thousand, two hundred forty-five".