25332781075 has 24 divisors (see below), whose sum is σ = 37138114080. Its totient is φ = 16772044800.

The previous prime is 25332781051. The next prime is 25332781079. The reversal of 25332781075 is 57018723352.

It is a happy number.

It is not a de Polignac number, because 25332781075 - 2⁹ = 25332780563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25332781079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2490766 + ... + 2500915.

It is an arithmetic number, because the mean of its divisors is an integer number (1547421420).

Almost surely, 2^25332781075 is an apocalyptic number.

25332781075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25332781075 is a deficient number, since it is larger than the sum of its proper divisors (11805333005).

25332781075 is a wasteful number, since it uses less digits than its factorization.

25332781075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991727 (or 4991722 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 25332781075 in words is "twenty-five billion, three hundred thirty-two million, seven hundred eighty-one thousand, seventy-five".