212525452544 has 18 divisors (see below), whose sum is σ = 424220728050. Its totient is φ = 106262726144.

The previous prime is 212525452523. The next prime is 212525452589. The reversal of 212525452544 is 445254525212.

It can be written as a sum of positive squares in only one way, i.e., 111075558400 + 101449894144 = 333280^2 + 318512^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415088519 + ... + 415089030.

It is an arithmetic number, because the mean of its divisors is an integer number (23567818225).

Almost surely, 2^212525452544 is an apocalyptic number.

It is an amenable number.

212525452544 is a deficient number, since it is larger than the sum of its proper divisors (211695275506).

212525452544 is an frugal number, since it uses more digits than its factorization.

212525452544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830177565 (or 830177551 counting only the distinct ones).

The product of its digits is 640000, while the sum is 41.

Adding to 212525452544 its reverse (445254525212), we get a palindrome (657779977756).

The spelling of 212525452544 in words is "two hundred twelve billion, five hundred twenty-five million, four hundred fifty-two thousand, five hundred forty-four".