7072405 has 4 divisors (see below), whose sum is σ = 8486892. Its totient is φ = 5657920.

The previous prime is 7072399. The next prime is 7072411. The reversal of 7072405 is 5042707.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (7072399) and next prime (7072411).

It can be written as a sum of positive squares in 2 ways, for example, as 4691556 + 2380849 = 2166^2 + 1543^2 .

It is not a de Polignac number, because 7072405 - 2³ = 7072397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7072405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707236 + ... + 707245.

It is an arithmetic number, because the mean of its divisors is an integer number (2121723).

Almost surely, 2^7072405 is an apocalyptic number.

It is an amenable number.

7072405 is a deficient number, since it is larger than the sum of its proper divisors (1414487).

7072405 is a wasteful number, since it uses less digits than its factorization.

7072405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414486.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 7072405 is about 2659.3993682785. The cubic root of 7072405 is about 191.9504085608.

The spelling of 7072405 in words is "seven million, seventy-two thousand, four hundred five".