25729476845 has 8 divisors (see below), whose sum is σ = 30876264960. Its totient is φ = 20582986320.

The previous prime is 25729476841. The next prime is 25729476853. The reversal of 25729476845 is 54867492752.

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

It is not a de Polignac number, because 25729476845 - 2² = 25729476841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25729476841) 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, 226340 + ... + 320450.

It is an arithmetic number, because the mean of its divisors is an integer number (3859533120).

Almost surely, 2^25729476845 is an apocalyptic number.

It is an amenable number.

25729476845 is a deficient number, since it is larger than the sum of its proper divisors (5146788115).

25729476845 is an equidigital number, since it uses as much as digits as its factorization.

25729476845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148795.

The product of its digits is 33868800, while the sum is 59.

The spelling of 25729476845 in words is "twenty-five billion, seven hundred twenty-nine million, four hundred seventy-six thousand, eight hundred forty-five".