1298525 has 6 divisors (see below), whose sum is σ = 1610202. Its totient is φ = 1038800.

The previous prime is 1298491. The next prime is 1298537. The reversal of 1298525 is 5258921.

It can be written as a sum of positive squares in 3 ways, for example, as 3481 + 1295044 = 59^2 + 1138^2 .

It is not a de Polignac number, because 1298525 - 2¹⁰ = 1297501 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1298491 and 1298500.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 25946 + ... + 25995.

It is an arithmetic number, because the mean of its divisors is an integer number (268367).

2^1298525 is an apocalyptic number.

It is an amenable number.

1298525 is a deficient number, since it is larger than the sum of its proper divisors (311677).

1298525 is an equidigital number, since it uses as much as digits as its factorization.

1298525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51951 (or 51946 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 1298525 is about 1139.5284112298. The cubic root of 1298525 is about 109.0979956465.

The spelling of 1298525 in words is "one million, two hundred ninety-eight thousand, five hundred twenty-five".