25996671019 has 16 divisors (see below), whose sum is σ = 28606980096. Its totient is φ = 23427835200.

The previous prime is 25996671011. The next prime is 25996671053. The reversal of 25996671019 is 91017669952.

It is not a de Polignac number, because 25996671019 - 2³ = 25996671011 is a prime.

It is a super-2 number, since 2×25996671019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25996671011) 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, 1838394 + ... + 1852480.

It is an arithmetic number, because the mean of its divisors is an integer number (1787936256).

Almost surely, 2^25996671019 is an apocalyptic number.

25996671019 is a deficient number, since it is larger than the sum of its proper divisors (2610309077).

25996671019 is a wasteful number, since it uses less digits than its factorization.

25996671019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15546.

The product of its (nonzero) digits is 1837080, while the sum is 55.

The spelling of 25996671019 in words is "twenty-five billion, nine hundred ninety-six million, six hundred seventy-one thousand, nineteen".