512221425 has 12 divisors (see below), whose sum is σ = 846872880. Its totient is φ = 273184720.

The previous prime is 512221387. The next prime is 512221427. The reversal of 512221425 is 524122215.

It is not a de Polignac number, because 512221425 - 2¹⁸ = 511959281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 512221395 and 512221404.

It is not an unprimeable number, because it can be changed into a prime (512221427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3414735 + ... + 3414884.

It is an arithmetic number, because the mean of its divisors is an integer number (70572740).

Almost surely, 2^512221425 is an apocalyptic number.

It is an amenable number.

512221425 is a deficient number, since it is larger than the sum of its proper divisors (334651455).

512221425 is a wasteful number, since it uses less digits than its factorization.

512221425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829632 (or 6829627 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 512221425 is about 22632.3093165501. The cubic root of 512221425 is about 800.1153088999.

The spelling of 512221425 in words is "five hundred twelve million, two hundred twenty-one thousand, four hundred twenty-five".