25135003424 has 96 divisors (see below), whose sum is σ = 52589885040. Its totient is φ = 11804262400.

The previous prime is 25135003417. The next prime is 25135003427. The reversal of 25135003424 is 42430053152.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 8096400400 + 17038603024 = 89980^2 + 130532^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (25135003427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17539412 + ... + 17540844.

Almost surely, 2^25135003424 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 25135003424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26294942520).

25135003424 is an abundant number, since it is smaller than the sum of its proper divisors (27454881616).

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

25135003424 is a wasteful number, since it uses less digits than its factorization.

25135003424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974 (or 1966 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 25135003424 its reverse (42430053152), we get a palindrome (67565056576).

The spelling of 25135003424 in words is "twenty-five billion, one hundred thirty-five million, three thousand, four hundred twenty-four".