25212032 has 32 divisors (see below), whose sum is σ = 51066300. Its totient is φ = 12395520.

The previous prime is 25212023. The next prime is 25212041. The reversal of 25212032 is 23021252.

25212032 = T₁₅₃ + T₁₅₄ + ... + T₅₃₆.

It is an interprime number because it is at equal distance from previous prime (25212023) and next prime (25212041).

It can be written as a sum of positive squares in 2 ways, for example, as 21307456 + 3904576 = 4616^2 + 1976^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25212032.

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 3 ways as a sum of consecutive naturals, for example, 6194 + ... + 9422.

Almost surely, 2^25212032 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 25212032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25533150).

25212032 is an abundant number, since it is smaller than the sum of its proper divisors (25854268).

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

25212032 is an equidigital number, since it uses as much as digits as its factorization.

25212032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304 (or 3292 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 25212032 is about 5021.1584320752. The cubic root of 25212032 is about 293.2260948679.

Adding to 25212032 its reverse (23021252), we get a palindrome (48233284).

The spelling of 25212032 in words is "twenty-five million, two hundred twelve thousand, thirty-two".