25528340 has 24 divisors (see below), whose sum is σ = 54412512. Its totient is φ = 10058400.

The previous prime is 25528333. The next prime is 25528361. The reversal of 25528340 is 4382552.

It is a super-2 number, since 2×25528340² = 1303392286311200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8186 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (2267188).

Almost surely, 2^25528340 is an apocalyptic number.

25528340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25528340 is an abundant number, since it is smaller than the sum of its proper divisors (28884172).

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

25528340 is a wasteful number, since it uses less digits than its factorization.

25528340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19127 (or 19125 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 25528340 is about 5052.5577681012. The cubic root of 25528340 is about 294.4472652974.

The spelling of 25528340 in words is "twenty-five million, five hundred twenty-eight thousand, three hundred forty".