25940166772 has 48 divisors (see below), whose sum is σ = 49495758480. Its totient is φ = 11823685632.

The previous prime is 25940166767. The next prime is 25940166773. The reversal of 25940166772 is 27766104952.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4762932196 + 21177234576 = 69014^2 + 145524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25940166773) 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, 4518688 + ... + 4524424.

It is an arithmetic number, because the mean of its divisors is an integer number (1031161635).

Almost surely, 2^25940166772 is an apocalyptic number.

It is an amenable number.

25940166772 is a deficient number, since it is larger than the sum of its proper divisors (23555591708).

25940166772 is a wasteful number, since it uses less digits than its factorization.

25940166772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6820 (or 6818 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 25940166772 in words is "twenty-five billion, nine hundred forty million, one hundred sixty-six thousand, seven hundred seventy-two".