25541452530 has 96 divisors (see below), whose sum is σ = 72486430848. Its totient is φ = 6188313600.

The previous prime is 25541452493. The next prime is 25541452543. The reversal of 25541452530 is 3525414552.

25541452530 is a `hidden beast` number, since 2 + 554 + 1 + 4 + 52 + 53 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1990435 + ... + 2003225.

It is an arithmetic number, because the mean of its divisors is an integer number (755066988).

Almost surely, 2^25541452530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25541452530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36243215424).

25541452530 is an abundant number, since it is smaller than the sum of its proper divisors (46944978318).

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

25541452530 is a wasteful number, since it uses less digits than its factorization.

25541452530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14832 (or 14829 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 25541452530 in words is "twenty-five billion, five hundred forty-one million, four hundred fifty-two thousand, five hundred thirty".