25721322106623 has 32 divisors (see below), whose sum is σ = 40433112625920. Its totient is φ = 14338704291840.

The previous prime is 25721322106591. The next prime is 25721322106763. The reversal of 25721322106623 is 32660122312752.

It is not a de Polignac number, because 25721322106623 - 2⁵ = 25721322106591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25721322106423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105808738 + ... + 106051551.

It is an arithmetic number, because the mean of its divisors is an integer number (1263534769560).

Almost surely, 2^{25721322106623} is an apocalyptic number.

25721322106623 is a deficient number, since it is larger than the sum of its proper divisors (14711790519297).

25721322106623 is a wasteful number, since it uses less digits than its factorization.

25721322106623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211860599.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 25721322106623 in words is "twenty-five trillion, seven hundred twenty-one billion, three hundred twenty-two million, one hundred six thousand, six hundred twenty-three".