1098625 has 32 divisors (see below), whose sum is σ = 1617408. Its totient is φ = 736000.

The previous prime is 1098623. The next prime is 1098631. The reversal of 1098625 is 5268901.

It is not a de Polignac number, because 1098625 - 2¹ = 1098623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23352 + ... + 23398.

It is an arithmetic number, because the mean of its divisors is an integer number (50544).

2^1098625 is an apocalyptic number.

It is an amenable number.

1098625 is a deficient number, since it is larger than the sum of its proper divisors (518783).

1098625 is a wasteful number, since it uses less digits than its factorization.

1098625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 80 counting only the distinct ones).

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

The square root of 1098625 is about 1048.1531376664. The cubic root of 1098625 is about 103.1849819402.

It can be divided in two parts, 10986 and 25, that added together give a palindrome (11011).

The spelling of 1098625 in words is "one million, ninety-eight thousand, six hundred twenty-five".