1255514440 has 32 divisors (see below), whose sum is σ = 2858950080. Its totient is φ = 496153792.

The previous prime is 1255514419. The next prime is 1255514453. The reversal of 1255514440 is 444155521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185764 + ... + 192403.

It is an arithmetic number, because the mean of its divisors is an integer number (89342190).

Almost surely, 2^1255514440 is an apocalyptic number.

1255514440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255514440 is an abundant number, since it is smaller than the sum of its proper divisors (1603435640).

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

1255514440 is a wasteful number, since it uses less digits than its factorization.

1255514440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378261 (or 378257 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 1255514440 is about 35433.2391971155. The cubic root of 1255514440 is about 1078.7990880882.

Adding to 1255514440 its reverse (444155521), we get a palindrome (1699669961).

The spelling of 1255514440 in words is "one billion, two hundred fifty-five million, five hundred fourteen thousand, four hundred forty".