10515520225 has 24 divisors (see below), whose sum is σ = 15055647488. Its totient is φ = 7136294400.

The previous prime is 10515520219. The next prime is 10515520241. The reversal of 10515520225 is 52202551501.

It is not a de Polignac number, because 10515520225 - 2⁵ = 10515520193 is a prime.

It is a super-2 number, since 2×10515520225² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10515520193 and 10515520202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292761 + ... + 326710.

Almost surely, 2^10515520225 is an apocalyptic number.

It is an amenable number.

10515520225 is a deficient number, since it is larger than the sum of its proper divisors (4540127263).

10515520225 is an equidigital number, since it uses as much as digits as its factorization.

10515520225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619585 (or 619580 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 10515520225 in words is "ten billion, five hundred fifteen million, five hundred twenty thousand, two hundred twenty-five".