25458875040 has 48 divisors (see below), whose sum is σ = 80195457888. Its totient is φ = 6789033216.

The previous prime is 25458875033. The next prime is 25458875087. The reversal of 25458875040 is 4057885452.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 26519182 + ... + 26520141.

It is an arithmetic number, because the mean of its divisors is an integer number (1670738706).

Almost surely, 2^25458875040 is an apocalyptic number.

25458875040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25458875040 is an abundant number, since it is smaller than the sum of its proper divisors (54736582848).

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

25458875040 is a wasteful number, since it uses less digits than its factorization.

25458875040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53039341 (or 53039333 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 48.

The spelling of 25458875040 in words is "twenty-five billion, four hundred fifty-eight million, eight hundred seventy-five thousand, forty".