25001024 has 28 divisors (see below), whose sum is σ = 50064924. Its totient is φ = 12386304.

The previous prime is 25000991. The next prime is 25001029. The reversal of 25001024 is 42010052.

It can be written as a sum of positive squares in 2 ways, for example, as 399424 + 24601600 = 632^2 + 4960^2 .

It is not an unprimeable number, because it can be changed into a prime (25001029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5504 + ... + 8960.

It is an arithmetic number, because the mean of its divisors is an integer number (1788033).

Almost surely, 2^25001024 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 25001024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25032462).

25001024 is an abundant number, since it is smaller than the sum of its proper divisors (25063900).

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

25001024 is a wasteful number, since it uses less digits than its factorization.

25001024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582 (or 3572 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 25001024 is about 5000.1023989514. The cubic root of 25001024 is about 292.4057660257.

Adding to 25001024 its reverse (42010052), we get a palindrome (67011076).

Subtracting 25001024 from its reverse (42010052), we obtain a triangular number (17009028 = T₅₈₃₂).

It can be divided in two parts, 2500 and 1024, that multiplied together give a 4-th power (2560000 = 40⁴).

The spelling of 25001024 in words is "twenty-five million, one thousand, twenty-four".