25864547142 has 32 divisors (see below), whose sum is σ = 59129620992. Its totient is φ = 7388538624.

The previous prime is 25864547131. The next prime is 25864547237. The reversal of 25864547142 is 24174546852.

It is a junction number, because it is equal to n+sod(n) for n = 25864547091 and 25864547100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193423 + ... + 298565.

It is an arithmetic number, because the mean of its divisors is an integer number (1847800656).

Almost surely, 2^25864547142 is an apocalyptic number.

25864547142 is an abundant number, since it is smaller than the sum of its proper divisors (33265073850).

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

25864547142 is a wasteful number, since it uses less digits than its factorization.

25864547142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111012.

The product of its digits is 2150400, while the sum is 48.

The spelling of 25864547142 in words is "twenty-five billion, eight hundred sixty-four million, five hundred forty-seven thousand, one hundred forty-two".