25552434321210 has 192 divisors, whose sum is σ = 64500039410688. Its totient is φ = 6477972559872.

The previous prime is 25552434321209. The next prime is 25552434321347. The reversal of 25552434321210 is 1212343425552.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2310968002 + ... + 2310979058.

It is an arithmetic number, because the mean of its divisors is an integer number (335937705264).

Almost surely, 2^{25552434321210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25552434321210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32250019705344).

25552434321210 is an abundant number, since it is smaller than the sum of its proper divisors (38947605089478).

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

25552434321210 is a wasteful number, since it uses less digits than its factorization.

25552434321210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11989 (or 11966 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 25552434321210 its reverse (1212343425552), we get a palindrome (26764777746762).

The spelling of 25552434321210 in words is "twenty-five trillion, five hundred fifty-two billion, four hundred thirty-four million, three hundred twenty-one thousand, two hundred ten".