7252405 has 4 divisors (see below), whose sum is σ = 8702892. Its totient is φ = 5801920.

The previous prime is 7252393. The next prime is 7252409. The reversal of 7252405 is 5042527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5042527 = 7 ⋅720361.

It can be written as a sum of positive squares in 2 ways, for example, as 4490161 + 2762244 = 2119^2 + 1662^2 .

It is not a de Polignac number, because 7252405 - 2⁵ = 7252373 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 7252405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7252409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725236 + ... + 725245.

It is an arithmetic number, because the mean of its divisors is an integer number (2175723).

Almost surely, 2^7252405 is an apocalyptic number.

It is an amenable number.

7252405 is a deficient number, since it is larger than the sum of its proper divisors (1450487).

7252405 is a wasteful number, since it uses less digits than its factorization.

7252405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450486.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 7252405 is about 2693.0289638249. The cubic root of 7252405 is about 193.5652307190.

The spelling of 7252405 in words is "seven million, two hundred fifty-two thousand, four hundred five".