1325555000 has 240 divisors, whose sum is σ = 3913934640. Its totient is φ = 411840000.

The previous prime is 1325554999. The next prime is 1325555003. The reversal of 1325555000 is 5555231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325555003) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4234844 + ... + 4235156.

It is an arithmetic number, because the mean of its divisors is an integer number (16308061).

Almost surely, 2^1325555000 is an apocalyptic number.

1325555000 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 1325555000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956967320).

1325555000 is an abundant number, since it is smaller than the sum of its proper divisors (2588379640).

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

1325555000 is a wasteful number, since it uses less digits than its factorization.

1325555000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 1325555000 is about 36408.1721595578. The cubic root of 1325555000 is about 1098.4979498840.

The spelling of 1325555000 in words is "one billion, three hundred twenty-five million, five hundred fifty-five thousand".