1025698 has 4 divisors (see below), whose sum is σ = 1538550. Its totient is φ = 512848.

The previous prime is 1025693. The next prime is 1025707. The reversal of 1025698 is 8965201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8965201 = 7 ⋅1280743.

It can be written as a sum of positive squares in only one way, i.e., 974169 + 51529 = 987^2 + 227^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1025693) 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 as a sum of consecutive naturals, namely, 256423 + ... + 256426.

2^1025698 is an apocalyptic number.

1025698 is a deficient number, since it is larger than the sum of its proper divisors (512852).

1025698 is an equidigital number, since it uses as much as digits as its factorization.

1025698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512851.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1025698 is about 1012.7674955290. The cubic root of 1025698 is about 100.8493653598.

The spelling of 1025698 in words is "one million, twenty-five thousand, six hundred ninety-eight".