1255261025 has 6 divisors (see below), whose sum is σ = 1556523702. Its totient is φ = 1004208800.

The previous prime is 1255261019. The next prime is 1255261039. The reversal of 1255261025 is 5201625521.

It can be written as a sum of positive squares in 3 ways, for example, as 24373969 + 1230887056 = 4937^2 + 35084^2 .

It is not a de Polignac number, because 1255261025 - 2⁴ = 1255261009 is a prime.

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, 25105196 + ... + 25105245.

It is an arithmetic number, because the mean of its divisors is an integer number (259420617).

Almost surely, 2^1255261025 is an apocalyptic number.

It is an amenable number.

1255261025 is a deficient number, since it is larger than the sum of its proper divisors (301262677).

1255261025 is an equidigital number, since it uses as much as digits as its factorization.

1255261025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50210451 (or 50210446 counting only the distinct ones).

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

The square root of 1255261025 is about 35429.6630664194. The cubic root of 1255261025 is about 1078.7265010387.

Adding to 1255261025 its reverse (5201625521), we get a palindrome (6456886546).

The spelling of 1255261025 in words is "one billion, two hundred fifty-five million, two hundred sixty-one thousand, twenty-five".