25552103424 has 96 divisors (see below), whose sum is σ = 68200292160. Its totient is φ = 8507621376.

The previous prime is 25552103411. The next prime is 25552103429. The reversal of 25552103424 is 42430125552.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (25552103429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7082229 + ... + 7085835.

It is an arithmetic number, because the mean of its divisors is an integer number (710419710).

Almost surely, 2^25552103424 is an apocalyptic number.

25552103424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25552103424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34100146080).

25552103424 is an abundant number, since it is smaller than the sum of its proper divisors (42648188736).

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

25552103424 is a wasteful number, since it uses less digits than its factorization.

25552103424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4765 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 25552103424 its reverse (42430125552), we get a palindrome (67982228976).

The spelling of 25552103424 in words is "twenty-five billion, five hundred fifty-two million, one hundred three thousand, four hundred twenty-four".