1255973880 has 384 divisors, whose sum is σ = 4715988480. Its totient is φ = 266112000.

The previous prime is 1255973839. The next prime is 1255973909. The reversal of 1255973880 is 883795521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5003755 + ... + 5004005.

It is an arithmetic number, because the mean of its divisors is an integer number (12281220).

Almost surely, 2^1255973880 is an apocalyptic number.

1255973880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255973880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357994240).

1255973880 is an abundant number, since it is smaller than the sum of its proper divisors (3460014600).

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

1255973880 is a wasteful number, since it uses less digits than its factorization.

1255973880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 1255973880 is about 35439.7217822037. The cubic root of 1255973880 is about 1078.9306631067.

The spelling of 1255973880 in words is "one billion, two hundred fifty-five million, nine hundred seventy-three thousand, eight hundred eighty".