7250405 has 16 divisors (see below), whose sum is σ = 9224064. Its totient is φ = 5459520.

The previous prime is 7250401. The next prime is 7250407. The reversal of 7250405 is 5040527.

It is not a de Polignac number, because 7250405 - 2² = 7250401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7250401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7235 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (576504).

Almost surely, 2^7250405 is an apocalyptic number.

It is an amenable number.

7250405 is a deficient number, since it is larger than the sum of its proper divisors (1973659).

7250405 is a wasteful number, since it uses less digits than its factorization.

7250405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 7250405 is about 2692.6576091289. The cubic root of 7250405 is about 193.5474358839.

The spelling of 7250405 in words is "seven million, two hundred fifty thousand, four hundred five".