7404225 has 24 divisors (see below), whose sum is σ = 12320640. Its totient is φ = 3923520.

The previous prime is 7404223. The next prime is 7404247. The reversal of 7404225 is 5224047.

It is not a de Polignac number, because 7404225 - 2¹ = 7404223 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7404195 and 7404204.

It is not an unprimeable number, because it can be changed into a prime (7404223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19992 + ... + 20358.

It is an arithmetic number, because the mean of its divisors is an integer number (513360).

Almost surely, 2^7404225 is an apocalyptic number.

7404225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7404225 is a deficient number, since it is larger than the sum of its proper divisors (4916415).

7404225 is a wasteful number, since it uses less digits than its factorization.

7404225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 7404225 is about 2721.0705613784. The cubic root of 7404225 is about 194.9065956349.

The spelling of 7404225 in words is "seven million, four hundred four thousand, two hundred twenty-five".