7405285 has 8 divisors (see below), whose sum is σ = 9409176. Its totient is φ = 5575680.

The previous prime is 7405259. The next prime is 7405303. The reversal of 7405285 is 5825047.

It can be written as a sum of positive squares in 4 ways, for example, as 2765569 + 4639716 = 1663^2 + 2154^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7405285 - 2¹⁷ = 7274213 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43476 + ... + 43645.

It is an arithmetic number, because the mean of its divisors is an integer number (1176147).

Almost surely, 2^7405285 is an apocalyptic number.

It is an amenable number.

7405285 is a deficient number, since it is larger than the sum of its proper divisors (2003891).

7405285 is a wasteful number, since it uses less digits than its factorization.

7405285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87143.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 7405285 is about 2721.2653306872. The cubic root of 7405285 is about 194.9158962317.

The spelling of 7405285 in words is "seven million, four hundred five thousand, two hundred eighty-five".