25240032 has 96 divisors (see below), whose sum is σ = 74511360. Its totient is φ = 8311680.

The previous prime is 25240013. The next prime is 25240043. The reversal of 25240032 is 23004252.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×25240032² = 1274118430722048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 25239987 and 25240014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113073 + ... + 113295.

It is an arithmetic number, because the mean of its divisors is an integer number (776160).

Almost surely, 2^25240032 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 25240032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37255680).

25240032 is an abundant number, since it is smaller than the sum of its proper divisors (49271328).

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

25240032 is a wasteful number, since it uses less digits than its factorization.

25240032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 25240032 is about 5023.9458595809. The cubic root of 25240032 is about 293.3346051368.

Adding to 25240032 its reverse (23004252), we get a palindrome (48244284).

The spelling of 25240032 in words is "twenty-five million, two hundred forty thousand, thirty-two".