7521925 has 6 divisors (see below), whose sum is σ = 9327218. Its totient is φ = 6017520.

The previous prime is 7521911. The next prime is 7521931. The reversal of 7521925 is 5291257.

It can be written as a sum of positive squares in 3 ways, for example, as 25281 + 7496644 = 159^2 + 2738^2 .

It is not a de Polignac number, because 7521925 - 2⁵ = 7521893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 150414 + ... + 150463.

Almost surely, 2^7521925 is an apocalyptic number.

It is an amenable number.

7521925 is a deficient number, since it is larger than the sum of its proper divisors (1805293).

7521925 is a wasteful number, since it uses less digits than its factorization.

7521925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300887 (or 300882 counting only the distinct ones).

The product of its digits is 6300, while the sum is 31.

The square root of 7521925 is about 2742.6128053373. The cubic root of 7521925 is about 195.9339375443.

The spelling of 7521925 in words is "seven million, five hundred twenty-one thousand, nine hundred twenty-five".