512211725 has 12 divisors (see below), whose sum is σ = 662758176. Its totient is φ = 391952880.

The previous prime is 512211697. The next prime is 512211731. The reversal of 512211725 is 527112215.

It is not a de Polignac number, because 512211725 - 2¹⁶ = 512146189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 512211694 and 512211703.

It is a congruent number.

It is an unprimeable number.

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, 444827 + ... + 445976.

It is an arithmetic number, because the mean of its divisors is an integer number (55229848).

Almost surely, 2^512211725 is an apocalyptic number.

It is an amenable number.

512211725 is a deficient number, since it is larger than the sum of its proper divisors (150546451).

512211725 is a wasteful number, since it uses less digits than its factorization.

512211725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890836 (or 890831 counting only the distinct ones).

The product of its digits is 1400, while the sum is 26.

The square root of 512211725 is about 22632.0950201257. The cubic root of 512211725 is about 800.1102582407.

The spelling of 512211725 in words is "five hundred twelve million, two hundred eleven thousand, seven hundred twenty-five".