25256771423 has 8 divisors (see below), whose sum is σ = 27255003216. Its totient is φ = 23266454400.

The previous prime is 25256771399. The next prime is 25256771447. The reversal of 25256771423 is 32417765252.

It is an interprime number because it is at equal distance from previous prime (25256771399) and next prime (25256771447).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25256771423 - 2¹⁴ = 25256755039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25256771723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972058 + ... + 1984823.

It is an arithmetic number, because the mean of its divisors is an integer number (3406875402).

Almost surely, 2^25256771423 is an apocalyptic number.

25256771423 is a deficient number, since it is larger than the sum of its proper divisors (1998231793).

25256771423 is a wasteful number, since it uses less digits than its factorization.

25256771423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957385.

The product of its digits is 705600, while the sum is 44.

The spelling of 25256771423 in words is "twenty-five billion, two hundred fifty-six million, seven hundred seventy-one thousand, four hundred twenty-three".