7525420 has 48 divisors (see below), whose sum is σ = 18446400. Its totient is φ = 2577792.

The previous prime is 7525411. The next prime is 7525423. The reversal of 7525420 is 245257.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (7525423) 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 15 ways as a sum of consecutive naturals, for example, 6312 + ... + 7408.

It is an arithmetic number, because the mean of its divisors is an integer number (384300).

Almost surely, 2^7525420 is an apocalyptic number.

7525420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7525420 is the 1372-nd decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7525420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9223200).

7525420 is an abundant number, since it is smaller than the sum of its proper divisors (10920980).

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

7525420 is a wasteful number, since it uses less digits than its factorization.

7525420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 7525420 is about 2743.2498974756. The cubic root of 7525420 is about 195.9642792046.

The spelling of 7525420 in words is "seven million, five hundred twenty-five thousand, four hundred twenty".