1325797953500 has 96 divisors (see below), whose sum is σ = 2905227386880. Its totient is φ = 528548328000.

The previous prime is 1325797953499. The next prime is 1325797953503. The reversal of 1325797953500 is 53597975231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325797953503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229413611 + ... + 229419389.

It is an arithmetic number, because the mean of its divisors is an integer number (30262785280).

Almost surely, 2^{1325797953500} is an apocalyptic number.

1325797953500 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 1325797953500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1452613693440).

1325797953500 is an abundant number, since it is smaller than the sum of its proper divisors (1579429433380).

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

1325797953500 is a wasteful number, since it uses less digits than its factorization.

1325797953500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7252 (or 7240 counting only the distinct ones).

The product of its (nonzero) digits is 8930250, while the sum is 56.

The spelling of 1325797953500 in words is "one trillion, three hundred twenty-five billion, seven hundred ninety-seven million, nine hundred fifty-three thousand, five hundred".