25195750040 has 32 divisors (see below), whose sum is σ = 56733471360. Its totient is φ = 10070649600.

The previous prime is 25195750037. The next prime is 25195750051. The reversal of 25195750040 is 4005759152.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25195749976 and 25195750003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185576 + ... + 291255.

It is an arithmetic number, because the mean of its divisors is an integer number (1772920980).

Almost surely, 2^25195750040 is an apocalyptic number.

25195750040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25195750040 is an abundant number, since it is smaller than the sum of its proper divisors (31537721320).

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

25195750040 is a wasteful number, since it uses less digits than its factorization.

25195750040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478163 (or 478159 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 25195750040 in words is "twenty-five billion, one hundred ninety-five million, seven hundred fifty thousand, forty".