25875475840 has 64 divisors (see below), whose sum is σ = 62088930000. Its totient is φ = 10311645184.

The previous prime is 25875475807. The next prime is 25875475841. The reversal of 25875475840 is 4857457852.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25875475841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97011 + ... + 247309.

Almost surely, 2^25875475840 is an apocalyptic number.

25875475840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25875475840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31044465000).

25875475840 is an abundant number, since it is smaller than the sum of its proper divisors (36213454160).

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

25875475840 is a wasteful number, since it uses less digits than its factorization.

25875475840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150587 (or 150575 counting only the distinct ones).

The product of its (nonzero) digits is 12544000, while the sum is 55.

The spelling of 25875475840 in words is "twenty-five billion, eight hundred seventy-five million, four hundred seventy-five thousand, eight hundred forty".