513611025 has 24 divisors (see below), whose sum is σ = 878455680. Its totient is φ = 264479040.

The previous prime is 513611017. The next prime is 513611029. The reversal of 513611025 is 520116315.

It is not a de Polignac number, because 513611025 - 2³ = 513611017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513610986 and 513611004.

It is not an unprimeable number, because it can be changed into a prime (513611029) 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, 115897 + ... + 120246.

It is an arithmetic number, because the mean of its divisors is an integer number (36602320).

Almost surely, 2^513611025 is an apocalyptic number.

It is an amenable number.

513611025 is a deficient number, since it is larger than the sum of its proper divisors (364844655).

513611025 is a wasteful number, since it uses less digits than its factorization.

513611025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236185 (or 236180 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 513611025 is about 22662.9879980553. The cubic root of 513611025 is about 800.8381969964.

It can be divided in two parts, 5136 and 11025, that added together give a palindrome (16161).

The spelling of 513611025 in words is "five hundred thirteen million, six hundred eleven thousand, twenty-five".