1255445147 has 8 divisors (see below), whose sum is σ = 1376069952. Its totient is φ = 1135902600.

The previous prime is 1255445143. The next prime is 1255445171. The reversal of 1255445147 is 7415445521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255445147 - 2² = 1255445143 is a prime.

It is a super-2 number, since 2×1255445147² = 3152285034251703218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1255445147.

It is not an unprimeable number, because it can be changed into a prime (1255445143) 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, 268133 + ... + 272774.

It is an arithmetic number, because the mean of its divisors is an integer number (172008744).

Almost surely, 2^1255445147 is an apocalyptic number.

1255445147 is a deficient number, since it is larger than the sum of its proper divisors (120624805).

1255445147 is a wasteful number, since it uses less digits than its factorization.

1255445147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541129.

The product of its digits is 112000, while the sum is 38.

The square root of 1255445147 is about 35432.2613870467. The cubic root of 1255445147 is about 1078.7792410842.

The spelling of 1255445147 in words is "one billion, two hundred fifty-five million, four hundred forty-five thousand, one hundred forty-seven".