25780337195 has 16 divisors (see below), whose sum is σ = 31271560320. Its totient is φ = 20401455744.

The previous prime is 25780337183. The next prime is 25780337197. The reversal of 25780337195 is 59173308752.

It is a cyclic number.

It is not a de Polignac number, because 25780337195 - 2¹² = 25780333099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25780337197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295502 + ... + 372668.

It is an arithmetic number, because the mean of its divisors is an integer number (1954472520).

Almost surely, 2^25780337195 is an apocalyptic number.

25780337195 is a deficient number, since it is larger than the sum of its proper divisors (5491223125).

25780337195 is a wasteful number, since it uses less digits than its factorization.

25780337195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77894.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 25780337195 in words is "twenty-five billion, seven hundred eighty million, three hundred thirty-seven thousand, one hundred ninety-five".