7525280 has 48 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 2579712.

The previous prime is 7525261. The next prime is 7525291. The reversal of 7525280 is 825257.

It is an Ulam number.

It is a nialpdrome in base 14.

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 7 ways as a sum of consecutive naturals, for example, 2240 + ... + 4479.

It is an arithmetic number, because the mean of its divisors is an integer number (423360).

Almost surely, 2^7525280 is an apocalyptic number.

7525280 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7525280 is the 2240-th pentagonal number.

It is an amenable number.

7525280 is an abundant number, since it is smaller than the sum of its proper divisors (12796000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7525280 is a wasteful number, since it uses less digits than its factorization.

7525280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741 (or 6733 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 7525280 is about 2743.2243801775. The cubic root of 7525280 is about 195.9630639825.

The spelling of 7525280 in words is "seven million, five hundred twenty-five thousand, two hundred eighty".