1265125025 has 6 divisors (see below), whose sum is σ = 1568755062. Its totient is φ = 1012100000.

The previous prime is 1265125019. The next prime is 1265125031. The reversal of 1265125025 is 5205215621.

1265125025 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1265125019) and next prime (1265125031).

It can be written as a sum of positive squares in 3 ways, for example, as 60202081 + 1204922944 = 7759^2 + 34712^2 .

It is not a de Polignac number, because 1265125025 - 2⁸ = 1265124769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25302476 + ... + 25302525.

It is an arithmetic number, because the mean of its divisors is an integer number (261459177).

Almost surely, 2^1265125025 is an apocalyptic number.

It is an amenable number.

1265125025 is a deficient number, since it is larger than the sum of its proper divisors (303630037).

1265125025 is an equidigital number, since it uses as much as digits as its factorization.

1265125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50605011 (or 50605006 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1265125025 is about 35568.5960504488. The cubic root of 1265125025 is about 1081.5447216904.

The spelling of 1265125025 in words is "one billion, two hundred sixty-five million, one hundred twenty-five thousand, twenty-five".