13145775025 has 6 divisors (see below), whose sum is σ = 16300761062. Its totient is φ = 10516620000.

The previous prime is 13145775001. The next prime is 13145775053. The reversal of 13145775025 is 52057754131.

It can be written as a sum of positive squares in 3 ways, for example, as 27279729 + 13118495296 = 5223^2 + 114536^2 .

It is not a de Polignac number, because 13145775025 - 2²¹ = 13143677873 is a prime.

It is a super-2 number, since 2×13145775025² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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, 262915476 + ... + 262915525.

Almost surely, 2^13145775025 is an apocalyptic number.

It is an amenable number.

13145775025 is a deficient number, since it is larger than the sum of its proper divisors (3154986037).

13145775025 is an equidigital number, since it uses as much as digits as its factorization.

13145775025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525831011 (or 525831006 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 40.

The spelling of 13145775025 in words is "thirteen billion, one hundred forty-five million, seven hundred seventy-five thousand, twenty-five".