25542532110 has 64 divisors (see below), whose sum is σ = 63027072000. Its totient is φ = 6621624192.

The previous prime is 25542532109. The next prime is 25542532121. The reversal of 25542532110 is 1123524552.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 149301 + ... + 270879.

It is an arithmetic number, because the mean of its divisors is an integer number (984798000).

Almost surely, 2^25542532110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25542532110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31513536000).

25542532110 is an abundant number, since it is smaller than the sum of its proper divisors (37484539890).

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

25542532110 is a wasteful number, since it uses less digits than its factorization.

25542532110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121785.

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 25542532110 in words is "twenty-five billion, five hundred forty-two million, five hundred thirty-two thousand, one hundred ten".