25761965973 has 16 divisors (see below), whose sum is σ = 34741088256. Its totient is φ = 16979848560.

The previous prime is 25761965951. The next prime is 25761965981. The reversal of 25761965973 is 37956916752.

It is not a de Polignac number, because 25761965973 - 2²⁰ = 25760917397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25761965573) 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, 44515 + ... + 231312.

It is an arithmetic number, because the mean of its divisors is an integer number (2171318016).

Almost surely, 2^25761965973 is an apocalyptic number.

It is an amenable number.

25761965973 is a deficient number, since it is larger than the sum of its proper divisors (8979122283).

25761965973 is a wasteful number, since it uses less digits than its factorization.

25761965973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276184.

The product of its digits is 21432600, while the sum is 60.

The spelling of 25761965973 in words is "twenty-five billion, seven hundred sixty-one million, nine hundred sixty-five thousand, nine hundred seventy-three".