1255145420 has 24 divisors (see below), whose sum is σ = 2750406624. Its totient is φ = 480229376.

The previous prime is 1255145393. The next prime is 1255145431. The reversal of 1255145420 is 245415521.

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, 1363829 + ... + 1364748.

It is an arithmetic number, because the mean of its divisors is an integer number (114600276).

Almost surely, 2^1255145420 is an apocalyptic number.

1255145420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255145420 is an abundant number, since it is smaller than the sum of its proper divisors (1495261204).

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

1255145420 is a wasteful number, since it uses less digits than its factorization.

1255145420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728609 (or 2728607 counting only the distinct ones).

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

The square root of 1255145420 is about 35428.0315569465. The cubic root of 1255145420 is about 1078.6933844191.

The spelling of 1255145420 in words is "one billion, two hundred fifty-five million, one hundred forty-five thousand, four hundred twenty".