25285320 has 48 divisors (see below), whose sum is σ = 82178460. Its totient is φ = 6742656.

The previous prime is 25285291. The next prime is 25285363. The reversal of 25285320 is 2358252.

It can be written as a sum of positive squares in 2 ways, for example, as 24740676 + 544644 = 4974^2 + 738^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34759 + ... + 35478.

Almost surely, 2^25285320 is an apocalyptic number.

25285320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25285320 is an abundant number, since it is smaller than the sum of its proper divisors (56893140).

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

25285320 is a wasteful number, since it uses less digits than its factorization.

25285320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70254 (or 70247 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 25285320 is about 5028.4510537540. The cubic root of 25285320 is about 293.5099430030.

The spelling of 25285320 in words is "twenty-five million, two hundred eighty-five thousand, three hundred twenty".