1255353340 has 24 divisors (see below), whose sum is σ = 2750862240. Its totient is φ = 480308928.

The previous prime is 1255353299. The next prime is 1255353361. The reversal of 1255353340 is 433535521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364055 + ... + 1364974.

It is an arithmetic number, because the mean of its divisors is an integer number (114619260).

Almost surely, 2^1255353340 is an apocalyptic number.

1255353340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255353340 is an abundant number, since it is smaller than the sum of its proper divisors (1495508900).

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

1255353340 is a wasteful number, since it uses less digits than its factorization.

1255353340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729061 (or 2729059 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 1255353340 is about 35430.9658349868. The cubic root of 1255353340 is about 1078.7529444620.

Adding to 1255353340 its reverse (433535521), we get a palindrome (1688888861).

The spelling of 1255353340 in words is "one billion, two hundred fifty-five million, three hundred fifty-three thousand, three hundred forty".