25209352 has 96 divisors (see below), whose sum is σ = 60350400. Its totient is φ = 9652608.

The previous prime is 25209347. The next prime is 25209367. The reversal of 25209352 is 25390252.

It is a super-2 number, since 2×25209352² = 1271022856519808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 25209352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 586243 + ... + 586285.

It is an arithmetic number, because the mean of its divisors is an integer number (628650).

Almost surely, 2^25209352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25209352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30175200).

25209352 is an abundant number, since it is smaller than the sum of its proper divisors (35141048).

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

25209352 is a wasteful number, since it uses less digits than its factorization.

25209352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25209352 is about 5020.8915542959. The cubic root of 25209352 is about 293.2157046730.

The spelling of 25209352 in words is "twenty-five million, two hundred nine thousand, three hundred fifty-two".