213511525000 has 48 divisors (see below), whose sum is σ = 500385668580. Its totient is φ = 85404600000.

The previous prime is 213511524997. The next prime is 213511525001. The reversal of 213511525000 is 525115312.

It can be written as a sum of positive squares in 6 ways, for example, as 627101764 + 212884423236 = 25042^2 + 461394^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (213511525001) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4245231 + ... + 4295230.

Almost surely, 2^213511525000 is an apocalyptic number.

213511525000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213511525000 is an abundant number, since it is smaller than the sum of its proper divisors (286874143580).

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

213511525000 is an frugal number, since it uses more digits than its factorization.

213511525000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8540492 (or 8540468 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 213511525000 in words is "two hundred thirteen billion, five hundred eleven million, five hundred twenty-five thousand".