25557388375552 has 80 divisors (see below), whose sum is σ = 56470232115792. Its totient is φ = 11457857617920.

The previous prime is 25557388375543. The next prime is 25557388375553.

25557388375552 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25557388375553) 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, 30670293 + ... + 31492564.

Almost surely, 2^{25557388375552} is an apocalyptic number.

25557388375552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25557388375552 is an abundant number, since it is smaller than the sum of its proper divisors (30912843740240).

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

25557388375552 is an equidigital number, since it uses as much as digits as its factorization.

25557388375552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62162959 (or 62162943 counting only the distinct ones).

The product of its digits is 1764000000, while the sum is 70.

The spelling of 25557388375552 in words is "twenty-five trillion, five hundred fifty-seven billion, three hundred eighty-eight million, three hundred seventy-five thousand, five hundred fifty-two".