25455643464134 has 32 divisors (see below), whose sum is σ = 41142614161824. Its totient is φ = 11742485909760.

The previous prime is 25455643464101. The next prime is 25455643464149. The reversal of 25455643464134 is 43146434655452.

It is a self number, because there is not a number n which added to its sum of digits gives 25455643464134.

It is a congruent number.

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, 488069402 + ... + 488121554.

It is an arithmetic number, because the mean of its divisors is an integer number (1285706692557).

Almost surely, 2^{25455643464134} is an apocalyptic number.

25455643464134 is a deficient number, since it is larger than the sum of its proper divisors (15686970697690).

25455643464134 is a wasteful number, since it uses less digits than its factorization.

25455643464134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61832.

The product of its digits is 82944000, while the sum is 56.

The spelling of 25455643464134 in words is "twenty-five trillion, four hundred fifty-five billion, six hundred forty-three million, four hundred sixty-four thousand, one hundred thirty-four".