1255789525 has 6 divisors (see below), whose sum is σ = 1557179042. Its totient is φ = 1004631600.

The previous prime is 1255789517. The next prime is 1255789543. The reversal of 1255789525 is 5259875521.

It can be written as a sum of positive squares in 3 ways, for example, as 1425636 + 1254363889 = 1194^2 + 35417^2 .

It is not a de Polignac number, because 1255789525 - 2³ = 1255789517 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 5 ways as a sum of consecutive naturals, for example, 25115766 + ... + 25115815.

Almost surely, 2^1255789525 is an apocalyptic number.

It is an amenable number.

1255789525 is a deficient number, since it is larger than the sum of its proper divisors (301389517).

1255789525 is an equidigital number, since it uses as much as digits as its factorization.

1255789525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50231591 (or 50231586 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 49.

The square root of 1255789525 is about 35437.1207210744. The cubic root of 1255789525 is about 1078.8778711396.

The spelling of 1255789525 in words is "one billion, two hundred fifty-five million, seven hundred eighty-nine thousand, five hundred twenty-five".