7751225 has 6 divisors (see below), whose sum is σ = 9611550. Its totient is φ = 6200960.

The previous prime is 7751203. The next prime is 7751239. The reversal of 7751225 is 5221577.

7751225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 89401 + 7661824 = 299^2 + 2768^2 .

It is not a de Polignac number, because 7751225 - 2⁸ = 7750969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155000 + ... + 155049.

It is an arithmetic number, because the mean of its divisors is an integer number (1601925).

Almost surely, 2^7751225 is an apocalyptic number.

It is an amenable number.

7751225 is a deficient number, since it is larger than the sum of its proper divisors (1860325).

7751225 is a wasteful number, since it uses less digits than its factorization.

7751225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310059 (or 310054 counting only the distinct ones).

The product of its digits is 4900, while the sum is 29.

The square root of 7751225 is about 2784.1021892165. The cubic root of 7751225 is about 197.9050066384.

The spelling of 7751225 in words is "seven million, seven hundred fifty-one thousand, two hundred twenty-five".