1255145984 has 40 divisors (see below), whose sum is σ = 2594348460. Its totient is φ = 605925376.

The previous prime is 1255145981. The next prime is 1255145987. The reversal of 1255145984 is 4895415521.

It is an interprime number because it is at equal distance from previous prime (1255145981) and next prime (1255145987).

It can be written as a sum of positive squares in 2 ways, for example, as 1202147584 + 52998400 = 34672^2 + 7280^2 .

It is not an unprimeable number, because it can be changed into a prime (1255145981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27419 + ... + 57114.

Almost surely, 2^1255145984 is an apocalyptic number.

It is an amenable number.

1255145984 is an abundant number, since it is smaller than the sum of its proper divisors (1339202476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255145984 is an frugal number, since it uses more digits than its factorization.

1255145984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84580 (or 84564 counting only the distinct ones).

The product of its digits is 288000, while the sum is 44.

The square root of 1255145984 is about 35428.0395167444. The cubic root of 1255145984 is about 1078.6935459895.

The spelling of 1255145984 in words is "one billion, two hundred fifty-five million, one hundred forty-five thousand, nine hundred eighty-four".