25742843166 has 32 divisors (see below), whose sum is σ = 53874898848. Its totient is φ = 8191497600.

The previous prime is 25742843141. The next prime is 25742843167. The reversal of 25742843166 is 66134824752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25742843167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1082185 + ... + 1105716.

It is an arithmetic number, because the mean of its divisors is an integer number (1683590589).

Almost surely, 2^25742843166 is an apocalyptic number.

25742843166 is an abundant number, since it is smaller than the sum of its proper divisors (28132055682).

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

25742843166 is a wasteful number, since it uses less digits than its factorization.

25742843166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187996.

The product of its digits is 1935360, while the sum is 48.

The spelling of 25742843166 in words is "twenty-five billion, seven hundred forty-two million, eight hundred forty-three thousand, one hundred sixty-six".