1255230240 has 96 divisors (see below), whose sum is σ = 4313445696. Its totient is φ = 304296960.

The previous prime is 1255230239. The next prime is 1255230247. The reversal of 1255230240 is 420325521.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1255230240.

It is not an unprimeable number, because it can be changed into a prime (1255230247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113587 + ... + 124146.

It is an arithmetic number, because the mean of its divisors is an integer number (44931726).

Almost surely, 2^1255230240 is an apocalyptic number.

1255230240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255230240 is an abundant number, since it is smaller than the sum of its proper divisors (3058215456).

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

1255230240 is a wasteful number, since it uses less digits than its factorization.

1255230240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237762 (or 237754 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1255230240 is about 35429.2286114163. The cubic root of 1255230240 is about 1078.7176824567.

Adding to 1255230240 its reverse (420325521), we get a palindrome (1675555761).

The spelling of 1255230240 in words is "one billion, two hundred fifty-five million, two hundred thirty thousand, two hundred forty".