1308630625 has 15 divisors (see below), whose sum is σ = 1636395717. Its totient is φ = 1046181000.

The previous prime is 1308630623. The next prime is 1308630637. The reversal of 1308630625 is 5260368031.

The square root of 1308630625 is 36175.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 102596641 + 1206033984 = 10129^2 + 34728^2 .

It is not a de Polignac number, because 1308630625 - 2¹ = 1308630623 is a prime.

It is a super-2 number, since 2×1308630625² = 3425028225375781250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1308630623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 903652 + ... + 905098.

Almost surely, 2^1308630625 is an apocalyptic number.

1308630625 is the 36175-th square number.

1308630625 is the 18088-th centered octagonal number.

It is an amenable number.

1308630625 is a deficient number, since it is larger than the sum of its proper divisors (327765092).

1308630625 is an frugal number, since it uses more digits than its factorization.

1308630625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2914 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The cubic root of 1308630625 is about 1093.8027892888.

Adding to 1308630625 its reverse (5260368031), we get a palindrome (6568998656).

The spelling of 1308630625 in words is "one billion, three hundred eight million, six hundred thirty thousand, six hundred twenty-five".