10520077725 has 72 divisors (see below), whose sum is σ = 19427462912. Its totient is φ = 5437756800.

The previous prime is 10520077721. The next prime is 10520077741. The reversal of 10520077725 is 52777002501.

It is not a de Polignac number, because 10520077725 - 2² = 10520077721 is a prime.

It is a super-2 number, since 2×10520077725² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10520077725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10520077721) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2253744 + ... + 2258406.

Almost surely, 2^10520077725 is an apocalyptic number.

10520077725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10520077725 is a deficient number, since it is larger than the sum of its proper divisors (8907385187).

10520077725 is a wasteful number, since it uses less digits than its factorization.

10520077725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987 (or 4979 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 36.

The spelling of 10520077725 in words is "ten billion, five hundred twenty million, seventy-seven thousand, seven hundred twenty-five".