10513135525 has 6 divisors (see below), whose sum is σ = 13036288082. Its totient is φ = 8410508400.

The previous prime is 10513135517. The next prime is 10513135541. The reversal of 10513135525 is 52553131501.

It can be written as a sum of positive squares in 3 ways, for example, as 2185843009 + 8327292516 = 46753^2 + 91254^2 .

It is not a de Polignac number, because 10513135525 - 2³ = 10513135517 is a prime.

It is a super-2 number, since 2×10513135525² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210262686 + ... + 210262735.

Almost surely, 2^10513135525 is an apocalyptic number.

It is an amenable number.

10513135525 is a deficient number, since it is larger than the sum of its proper divisors (2523152557).

10513135525 is an equidigital number, since it uses as much as digits as its factorization.

10513135525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420525431 (or 420525426 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 31.

The spelling of 10513135525 in words is "ten billion, five hundred thirteen million, one hundred thirty-five thousand, five hundred twenty-five".