513055025 has 24 divisors (see below), whose sum is σ = 728911680. Its totient is φ = 350919360.

The previous prime is 513055001. The next prime is 513055027. The reversal of 513055025 is 520550315.

It is not a de Polignac number, because 513055025 - 2⁸ = 513054769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513054985 and 513055003.

It is not an unprimeable number, because it can be changed into a prime (513055027) 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, 69827 + ... + 76823.

It is an arithmetic number, because the mean of its divisors is an integer number (30371320).

Almost surely, 2^513055025 is an apocalyptic number.

It is an amenable number.

513055025 is a deficient number, since it is larger than the sum of its proper divisors (215856655).

513055025 is a wasteful number, since it uses less digits than its factorization.

513055025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433 (or 7428 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 513055025 is about 22650.7179797904. The cubic root of 513055025 is about 800.5491151919.

The spelling of 513055025 in words is "five hundred thirteen million, fifty-five thousand, twenty-five".