25459378195 has 16 divisors (see below), whose sum is σ = 30708397440. Its totient is φ = 20262960000.

The previous prime is 25459378171. The next prime is 25459378229. The reversal of 25459378195 is 59187395452.

It is not a de Polignac number, because 25459378195 - 2⁷ = 25459378067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947445 + ... + 973945.

It is an arithmetic number, because the mean of its divisors is an integer number (1919274840).

Almost surely, 2^25459378195 is an apocalyptic number.

25459378195 is a deficient number, since it is larger than the sum of its proper divisors (5249019245).

25459378195 is a wasteful number, since it uses less digits than its factorization.

25459378195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27486.

The product of its digits is 13608000, while the sum is 58.

The spelling of 25459378195 in words is "twenty-five billion, four hundred fifty-nine million, three hundred seventy-eight thousand, one hundred ninety-five".