7148825 has 6 divisors (see below), whose sum is σ = 8864574. Its totient is φ = 5719040.

The previous prime is 7148821. The next prime is 7148839. The reversal of 7148825 is 5288417.

It can be written as a sum of positive squares in 3 ways, for example, as 732736 + 6416089 = 856^2 + 2533^2 .

It is not a de Polignac number, because 7148825 - 2² = 7148821 is a prime.

It is a super-2 number, since 2×7148825² = 102211397761250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7148821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142952 + ... + 143001.

It is an arithmetic number, because the mean of its divisors is an integer number (1477429).

Almost surely, 2^7148825 is an apocalyptic number.

It is an amenable number.

7148825 is a deficient number, since it is larger than the sum of its proper divisors (1715749).

7148825 is a wasteful number, since it uses less digits than its factorization.

7148825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285963 (or 285958 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The square root of 7148825 is about 2673.7286698541. The cubic root of 7148825 is about 192.6392987364.

The spelling of 7148825 in words is "seven million, one hundred forty-eight thousand, eight hundred twenty-five".