513405425 has 24 divisors (see below), whose sum is σ = 715412544. Its totient is φ = 362640960.

The previous prime is 513405413. The next prime is 513405427. The reversal of 513405425 is 524504315.

It is not a de Polignac number, because 513405425 - 2¹⁶ = 513339889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513405427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26867 + ... + 41816.

It is an arithmetic number, because the mean of its divisors is an integer number (29808856).

Almost surely, 2^513405425 is an apocalyptic number.

It is an amenable number.

513405425 is a deficient number, since it is larger than the sum of its proper divisors (202007119).

513405425 is a wasteful number, since it uses less digits than its factorization.

513405425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68729 (or 68724 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 513405425 is about 22658.4515137288. The cubic root of 513405425 is about 800.7313234413.

It can be divided in two parts, 51340 and 5425, that added together give a palindrome (56765).

The spelling of 513405425 in words is "five hundred thirteen million, four hundred five thousand, four hundred twenty-five".