918025 has 6 divisors (see below), whose sum is σ = 1138382. Its totient is φ = 734400.

The previous prime is 918019. The next prime is 918041. The reversal of 918025 is 520819.

It can be written as a sum of positive squares in 3 ways, for example, as 17424 + 900601 = 132^2 + 949^2 .

It is not a de Polignac number, because 918025 - 2⁵ = 917993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 36721 = 918025 / (9 + 1 + 8 + 0 + 2 + 5).

It is an Ulam number.

It is a Duffinian number.

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, 18336 + ... + 18385.

2⁹¹⁸⁰²⁵ is an apocalyptic number.

It is an amenable number.

918025 is a deficient number, since it is larger than the sum of its proper divisors (220357).

918025 is a wasteful number, since it uses less digits than its factorization.

918025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36731 (or 36726 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 918025 is about 958.1362116109. The cubic root of 918025 is about 97.1892362775.

The spelling of 918025 in words is "nine hundred eighteen thousand, twenty-five".