511550425 has 6 divisors (see below), whose sum is σ = 634322558. Its totient is φ = 409240320.

The previous prime is 511550423. The next prime is 511550461. The reversal of 511550425 is 524055115.

It can be written as a sum of positive squares in 3 ways, for example, as 148571721 + 362978704 = 12189^2 + 19052^2 .

It is not a de Polignac number, because 511550425 - 2¹ = 511550423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511550393 and 511550402.

It is not an unprimeable number, because it can be changed into a prime (511550423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10230984 + ... + 10231033.

Almost surely, 2^511550425 is an apocalyptic number.

It is an amenable number.

511550425 is a deficient number, since it is larger than the sum of its proper divisors (122772133).

511550425 is a wasteful number, since it uses less digits than its factorization.

511550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20462027 (or 20462022 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 511550425 is about 22617.4805183955. The cubic root of 511550425 is about 799.7657777858.

The spelling of 511550425 in words is "five hundred eleven million, five hundred fifty thousand, four hundred twenty-five".