212542025523 has 4 divisors (see below), whose sum is σ = 283389367368. Its totient is φ = 141694683680.

The previous prime is 212542025519. The next prime is 212542025569. The reversal of 212542025523 is 325520245212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212542025523 - 2² = 212542025519 is a prime.

It is a super-2 number, since 2×212542025523² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212542025593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35423670918 + ... + 35423670923.

It is an arithmetic number, because the mean of its divisors is an integer number (70847341842).

Almost surely, 2^212542025523 is an apocalyptic number.

212542025523 is a deficient number, since it is larger than the sum of its proper divisors (70847341845).

212542025523 is an equidigital number, since it uses as much as digits as its factorization.

212542025523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70847341844.

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 212542025523 in words is "two hundred twelve billion, five hundred forty-two million, twenty-five thousand, five hundred twenty-three".