1098725 has 12 divisors (see below), whose sum is σ = 1383840. Its totient is φ = 865200.

The previous prime is 1098709. The next prime is 1098731. The reversal of 1098725 is 5278901.

It is not a de Polignac number, because 1098725 - 2⁴ = 1098709 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1098691 and 1098700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1466 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (115320).

2^1098725 is an apocalyptic number.

It is an amenable number.

1098725 is a deficient number, since it is larger than the sum of its proper divisors (285115).

1098725 is an equidigital number, since it uses as much as digits as its factorization.

1098725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1098725 is about 1048.2008395341. The cubic root of 1098725 is about 103.1881125762.

The spelling of 1098725 in words is "one million, ninety-eight thousand, seven hundred twenty-five".