25172280508 has 12 divisors (see below), whose sum is σ = 44063810560. Its totient is φ = 12582620352.

The previous prime is 25172280481. The next prime is 25172280509. The reversal of 25172280508 is 80508227152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25172280509) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 863853 + ... + 892516.

Almost surely, 2^25172280508 is an apocalyptic number.

It is an amenable number.

25172280508 is a deficient number, since it is larger than the sum of its proper divisors (18891530052).

25172280508 is a wasteful number, since it uses less digits than its factorization.

25172280508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759956 (or 1759954 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 25172280508 in words is "twenty-five billion, one hundred seventy-two million, two hundred eighty thousand, five hundred eight".