1254155825 has 12 divisors (see below), whose sum is σ = 1674780828. Its totient is φ = 926145600.

The previous prime is 1254155821. The next prime is 1254155863. The reversal of 1254155825 is 5285514521.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 183033841 + 1071121984 = 13529^2 + 32728^2 .

It is not a de Polignac number, because 1254155825 - 2² = 1254155821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254155821) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1929146 + ... + 1929795.

It is an arithmetic number, because the mean of its divisors is an integer number (139565069).

Almost surely, 2^1254155825 is an apocalyptic number.

It is an amenable number.

1254155825 is a deficient number, since it is larger than the sum of its proper divisors (420625003).

1254155825 is a wasteful number, since it uses less digits than its factorization.

1254155825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858964 (or 3858959 counting only the distinct ones).

The product of its digits is 80000, while the sum is 38.

The square root of 1254155825 is about 35414.0625317119. The cubic root of 1254155825 is about 1078.4098182741.

The spelling of 1254155825 in words is "one billion, two hundred fifty-four million, one hundred fifty-five thousand, eight hundred twenty-five".