1255562000 has 320 divisors, whose sum is σ = 3922034688. Its totient is φ = 377280000.

The previous prime is 1255561991. The next prime is 1255562003. The reversal of 1255562000 is 2655521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255562003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4773869 + ... + 4774131.

Almost surely, 2^1255562000 is an apocalyptic number.

1255562000 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 1255562000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961017344).

1255562000 is an abundant number, since it is smaller than the sum of its proper divisors (2666472688).

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

1255562000 is a wasteful number, since it uses less digits than its factorization.

1255562000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1255562000 is about 35433.9103120161. The cubic root of 1255562000 is about 1078.8127098715.

It can be divided in two parts, 12555 and 62000, that multiplied together give a square (778410000 = 27900²).

The spelling of 1255562000 in words is "one billion, two hundred fifty-five million, five hundred sixty-two thousand".