25168728629 has 4 divisors (see below), whose sum is σ = 27456794880. Its totient is φ = 22880662380.

The previous prime is 25168728623. The next prime is 25168728659. The reversal of 25168728629 is 92682786152.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25168728629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25168728623) 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, 1144033109 + ... + 1144033130.

It is an arithmetic number, because the mean of its divisors is an integer number (6864198720).

Almost surely, 2^25168728629 is an apocalyptic number.

It is an amenable number.

25168728629 is a deficient number, since it is larger than the sum of its proper divisors (2288066251).

25168728629 is a wasteful number, since it uses less digits than its factorization.

25168728629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288066250.

The product of its digits is 5806080, while the sum is 56.

The spelling of 25168728629 in words is "twenty-five billion, one hundred sixty-eight million, seven hundred twenty-eight thousand, six hundred twenty-nine".