1301625 has 48 divisors (see below), whose sum is σ = 2555280. Its totient is φ = 633600.

The previous prime is 1301621. The next prime is 1301669. The reversal of 1301625 is 5261031.

It can be written as a sum of positive squares in 8 ways, for example, as 881721 + 419904 = 939^2 + 648^2 .

It is not a de Polignac number, because 1301625 - 2² = 1301621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301598 and 1301607.

It is not an unprimeable number, because it can be changed into a prime (1301621) 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 47 ways as a sum of consecutive naturals, for example, 14581 + ... + 14669.

It is an arithmetic number, because the mean of its divisors is an integer number (53235).

2^1301625 is an apocalyptic number.

1301625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1301625 is a deficient number, since it is larger than the sum of its proper divisors (1253655).

1301625 is a wasteful number, since it uses less digits than its factorization.

1301625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1301625 is about 1140.8878121884. The cubic root of 1301625 is about 109.1847440749.

Adding to 1301625 its reverse (5261031), we get a palindrome (6562656).

It can be divided in two parts, 13016 and 25, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 1301625 in words is "one million, three hundred one thousand, six hundred twenty-five".