25389252 has 108 divisors (see below), whose sum is σ = 76871340. Its totient is φ = 7039872.

The previous prime is 25389233. The next prime is 25389253. The reversal of 25389252 is 25298352.

25389252 is a `hidden beast` number, since 25 + 389 + 252 = 666.

25389252 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 14930496 + 10458756 = 3864^2 + 3234^2 .

It is a super-2 number, since 2×25389252² = 1289228234239008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (43200) is a multiple of the sum of its prime factors (450).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25389253) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 65074 + ... + 65462.

Almost surely, 2^25389252 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 25389252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38435670).

25389252 is an abundant number, since it is smaller than the sum of its proper divisors (51482088).

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

25389252 is a wasteful number, since it uses less digits than its factorization.

25389252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 438 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 25389252 is about 5038.7748510923. The cubic root of 25389252 is about 293.9115380111.

The spelling of 25389252 in words is "twenty-five million, three hundred eighty-nine thousand, two hundred fifty-two".