10661515025 has 24 divisors (see below), whose sum is σ = 15119746560. Its totient is φ = 7305500160.

The previous prime is 10661515019. The next prime is 10661515043. The reversal of 10661515025 is 52051516601.

It is not a de Polignac number, because 10661515025 - 2¹⁸ = 10661252881 is a prime.

It is a super-2 number, since 2×10661515025² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10661514982 and 10661515000.

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, 230657 + ... + 272993.

It is an arithmetic number, because the mean of its divisors is an integer number (629989440).

Almost surely, 2^10661515025 is an apocalyptic number.

It is an amenable number.

10661515025 is a deficient number, since it is larger than the sum of its proper divisors (4458231535).

10661515025 is a wasteful number, since it uses less digits than its factorization.

10661515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43793 (or 43788 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 10661515025 in words is "ten billion, six hundred sixty-one million, five hundred fifteen thousand, twenty-five".