25628924109 has 8 divisors (see below), whose sum is σ = 34184322432. Its totient is φ = 17079737600.

The previous prime is 25628924099. The next prime is 25628924131. The reversal of 25628924109 is 90142982652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25628924109 - 2⁴ = 25628924093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25628924309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543317 + ... + 1559834.

It is an arithmetic number, because the mean of its divisors is an integer number (4273040304).

Almost surely, 2^25628924109 is an apocalyptic number.

It is an amenable number.

25628924109 is a deficient number, since it is larger than the sum of its proper divisors (8555398323).

25628924109 is a wasteful number, since it uses less digits than its factorization.

25628924109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105907.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 25628924109 in words is "twenty-five billion, six hundred twenty-eight million, nine hundred twenty-four thousand, one hundred nine".