1255520144 has 10 divisors (see below), whose sum is σ = 2432570310. Its totient is φ = 627760064.

The previous prime is 1255520137. The next prime is 1255520207. The reversal of 1255520144 is 4410255521.

It can be written as a sum of positive squares in only one way, i.e., 1224160144 + 31360000 = 34988^2 + 5600^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39234989 + ... + 39235020.

It is an arithmetic number, because the mean of its divisors is an integer number (243257031).

Almost surely, 2^1255520144 is an apocalyptic number.

It is an amenable number.

1255520144 is a deficient number, since it is larger than the sum of its proper divisors (1177050166).

1255520144 is an equidigital number, since it uses as much as digits as its factorization.

1255520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78470017 (or 78470011 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1255520144 is about 35433.3196864194. The cubic root of 1255520144 is about 1078.8007218038.

Adding to 1255520144 its reverse (4410255521), we get a palindrome (5665775665).

The spelling of 1255520144 in words is "one billion, two hundred fifty-five million, five hundred twenty thousand, one hundred forty-four".