25534221112100 has 18 divisors (see below), whose sum is σ = 55409259813474. Its totient is φ = 10213688444800.

The previous prime is 25534221112087. The next prime is 25534221112129. The reversal of 25534221112100 is 121112243552.

It can be written as a sum of positive squares in 3 ways, for example, as 2955834316516 + 22578386795584 = 1719254^2 + 4751672^2 .

It is a super-2 number, since 2×25534221112100² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127671105461 + ... + 127671105660.

Almost surely, 2^{25534221112100} is an apocalyptic number.

25534221112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25534221112100 is an abundant number, since it is smaller than the sum of its proper divisors (29875038701374).

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

25534221112100 is a wasteful number, since it uses less digits than its factorization.

25534221112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255342211135 (or 255342211128 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 25534221112100 its reverse (121112243552), we get a palindrome (25655333355652).

The spelling of 25534221112100 in words is "twenty-five trillion, five hundred thirty-four billion, two hundred twenty-one million, one hundred twelve thousand, one hundred".