25860142540 has 24 divisors (see below), whose sum is σ = 54310243680. Its totient is φ = 10343305728.

The previous prime is 25860142519. The next prime is 25860142573. The reversal of 25860142540 is 4524106852.

It is a self number, because there is not a number n which added to its sum of digits gives 25860142540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296604 + ... + 373756.

It is an arithmetic number, because the mean of its divisors is an integer number (2262926820).

Almost surely, 2^25860142540 is an apocalyptic number.

25860142540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25860142540 is an abundant number, since it is smaller than the sum of its proper divisors (28450101140).

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

25860142540 is a wasteful number, since it uses less digits than its factorization.

25860142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93921 (or 93919 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 25860142540 in words is "twenty-five billion, eight hundred sixty million, one hundred forty-two thousand, five hundred forty".