25430400253879 has 4 divisors (see below), whose sum is σ = 26926306151184. Its totient is φ = 23934494356576.

The previous prime is 25430400253871. The next prime is 25430400253931. The reversal of 25430400253879 is 97835200403452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25430400253879 - 2³ = 25430400253871 is a prime.

It is a super-3 number, since 3×25430400253879³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25430400253871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747952948627 + ... + 747952948660.

It is an arithmetic number, because the mean of its divisors is an integer number (6731576537796).

Almost surely, 2^{25430400253879} is an apocalyptic number.

25430400253879 is a deficient number, since it is larger than the sum of its proper divisors (1495905897305).

25430400253879 is a wasteful number, since it uses less digits than its factorization.

25430400253879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495905897304.

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 25430400253879 in words is "twenty-five trillion, four hundred thirty billion, four hundred million, two hundred fifty-three thousand, eight hundred seventy-nine".