1261025 has 6 divisors (see below), whose sum is σ = 1563702. Its totient is φ = 1008800.

The previous prime is 1260991. The next prime is 1261033. The reversal of 1261025 is 5201621.

It can be written as a sum of positive squares in 3 ways, for example, as 253009 + 1008016 = 503^2 + 1004^2 .

It is not a de Polignac number, because 1261025 - 2⁸ = 1260769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1260994 and 1261012.

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, 25196 + ... + 25245.

It is an arithmetic number, because the mean of its divisors is an integer number (260617).

2^1261025 is an apocalyptic number.

It is an amenable number.

1261025 is a deficient number, since it is larger than the sum of its proper divisors (302677).

1261025 is an equidigital number, since it uses as much as digits as its factorization.

1261025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50451 (or 50446 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1261025 is about 1122.9536945039. The cubic root of 1261025 is about 108.0375098332.

Adding to 1261025 its reverse (5201621), we get a palindrome (6462646).

The spelling of 1261025 in words is "one million, two hundred sixty-one thousand, twenty-five".