25912214646 has 16 divisors (see below), whose sum is σ = 52142372544. Its totient is φ = 8584414344.

The previous prime is 25912214641. The next prime is 25912214663. The reversal of 25912214646 is 64641221952.

It is a junction number, because it is equal to n+sod(n) for n = 25912214598 and 25912214607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25912214641) 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, 13246576 + ... + 13248531.

It is an arithmetic number, because the mean of its divisors is an integer number (3258898284).

Almost surely, 2^25912214646 is an apocalyptic number.

25912214646 is an abundant number, since it is smaller than the sum of its proper divisors (26230157898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25912214646 is a wasteful number, since it uses less digits than its factorization.

25912214646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26495275.

The product of its digits is 207360, while the sum is 42.

The spelling of 25912214646 in words is "twenty-five billion, nine hundred twelve million, two hundred fourteen thousand, six hundred forty-six".