25320530004 has 144 divisors (see below), whose sum is σ = 74287987200. Its totient is φ = 6521135040.

The previous prime is 25320529933. The next prime is 25320530033. The reversal of 25320530004 is 40003502352.

It is a super-2 number, since 2×25320530004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14902347 + ... + 14904045.

It is an arithmetic number, because the mean of its divisors is an integer number (515888800).

Almost surely, 2^25320530004 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 25320530004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37143993600).

25320530004 is an abundant number, since it is smaller than the sum of its proper divisors (48967457196).

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

25320530004 is a wasteful number, since it uses less digits than its factorization.

25320530004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The spelling of 25320530004 in words is "twenty-five billion, three hundred twenty million, five hundred thirty thousand, four".