513537825 has 24 divisors (see below), whose sum is σ = 852722208. Its totient is φ = 272702080.

The previous prime is 513537823. The next prime is 513537851. The reversal of 513537825 is 528735315.

It is not a de Polignac number, because 513537825 - 2¹ = 513537823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513537823) 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, 2782 + ... + 32168.

It is an arithmetic number, because the mean of its divisors is an integer number (35530092).

Almost surely, 2^513537825 is an apocalyptic number.

It is an amenable number.

513537825 is a deficient number, since it is larger than the sum of its proper divisors (339184383).

513537825 is a wasteful number, since it uses less digits than its factorization.

513537825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29633 (or 29628 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

The square root of 513537825 is about 22661.3729725275. The cubic root of 513537825 is about 800.8001499541.

The spelling of 513537825 in words is "five hundred thirteen million, five hundred thirty-seven thousand, eight hundred twenty-five".