1255461357 has 4 divisors (see below), whose sum is σ = 1673948480. Its totient is φ = 836974236.

The previous prime is 1255461353. The next prime is 1255461379. The reversal of 1255461357 is 7531645521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1255461357 - 2² = 1255461353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255461353) by changing a digit.

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, 209243557 + ... + 209243562.

It is an arithmetic number, because the mean of its divisors is an integer number (418487120).

Almost surely, 2^1255461357 is an apocalyptic number.

It is an amenable number.

1255461357 is a deficient number, since it is larger than the sum of its proper divisors (418487123).

1255461357 is an equidigital number, since it uses as much as digits as its factorization.

1255461357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418487122.

The product of its digits is 126000, while the sum is 39.

The square root of 1255461357 is about 35432.4901326452. The cubic root of 1255461357 is about 1078.7838840419.

The spelling of 1255461357 in words is "one billion, two hundred fifty-five million, four hundred sixty-one thousand, three hundred fifty-seven".