1255273920 has 84 divisors (see below), whose sum is σ = 4317629160. Its totient is φ = 334738944.

The previous prime is 1255273919. The next prime is 1255273933. The reversal of 1255273920 is 293725521.

1255273920 is a `hidden beast` number, since 12 + 552 + 7 + 3 + 92 + 0 = 666.

It is a super-2 number, since 2×1255273920² = 3151425228464332800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215050 + ... + 220809.

Almost surely, 2^1255273920 is an apocalyptic number.

1255273920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255273920 is an abundant number, since it is smaller than the sum of its proper divisors (3062355240).

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

1255273920 is a wasteful number, since it uses less digits than its factorization.

1255273920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435882 (or 435869 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1255273920 is about 35429.8450462319. The cubic root of 1255273920 is about 1078.7301948602.

The spelling of 1255273920 in words is "one billion, two hundred fifty-five million, two hundred seventy-three thousand, nine hundred twenty".