1255825625 has 10 divisors (see below), whose sum is σ = 1569280482. Its totient is φ = 1004660000.

The previous prime is 1255825609. The next prime is 1255825631. The reversal of 1255825625 is 5265285521.

It can be written as a sum of positive squares in 5 ways, for example, as 899220169 + 356605456 = 29987^2 + 18884^2 .

It is not a de Polignac number, because 1255825625 - 2⁴ = 1255825609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1004036 + ... + 1005285.

Almost surely, 2^1255825625 is an apocalyptic number.

It is an amenable number.

1255825625 is a deficient number, since it is larger than the sum of its proper divisors (313454857).

1255825625 is an frugal number, since it uses more digits than its factorization.

1255825625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009341 (or 2009326 counting only the distinct ones).

The product of its digits is 240000, while the sum is 41.

The square root of 1255825625 is about 35437.6300703080. The cubic root of 1255825625 is about 1078.8882091560. Note that the first 3 decimals are identical.

It can be divided in two parts, 12558 and 25625, that added together give a palindrome (38183).

The spelling of 1255825625 in words is "one billion, two hundred fifty-five million, eight hundred twenty-five thousand, six hundred twenty-five".