1265252525125 has 16 divisors (see below), whose sum is σ = 1671919574832. Its totient is φ = 952660723200.

The previous prime is 1265252525111. The next prime is 1265252525143. The reversal of 1265252525125 is 5215252525621.

It can be written as a sum of positive squares in 8 ways, for example, as 179757344484 + 1085495180641 = 423978^2 + 1041871^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1265252525125 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 297704352 + ... + 297708601.

It is an arithmetic number, because the mean of its divisors is an integer number (104494973427).

Almost surely, 2^{1265252525125} is an apocalyptic number.

It is an amenable number.

1265252525125 is a deficient number, since it is larger than the sum of its proper divisors (406667049707).

1265252525125 is an equidigital number, since it uses as much as digits as its factorization.

1265252525125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595412985 (or 595412975 counting only the distinct ones).

The product of its digits is 600000, while the sum is 43.

The spelling of 1265252525125 in words is "one trillion, two hundred sixty-five billion, two hundred fifty-two million, five hundred twenty-five thousand, one hundred twenty-five".