25542321102 has 24 divisors (see below), whose sum is σ = 57126912960. Its totient is φ = 8239458240.

The previous prime is 25542321059. The next prime is 25542321121. The reversal of 25542321102 is 20112324552.

25542321102 is a `hidden beast` number, since 2 + 5 + 542 + 3 + 2 + 110 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22886827 + ... + 22887942.

It is an arithmetic number, because the mean of its divisors is an integer number (2380288040).

Almost surely, 2^25542321102 is an apocalyptic number.

25542321102 is an abundant number, since it is smaller than the sum of its proper divisors (31584591858).

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

25542321102 is a wasteful number, since it uses less digits than its factorization.

25542321102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45774808 (or 45774805 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 25542321102 its reverse (20112324552), we get a palindrome (45654645654).

The spelling of 25542321102 in words is "twenty-five billion, five hundred forty-two million, three hundred twenty-one thousand, one hundred two".