2556401464254 has 32 divisors (see below), whose sum is σ = 5608763015040. Its totient is φ = 770339357600.

The previous prime is 2556401464237. The next prime is 2556401464259. The reversal of 2556401464254 is 4524641046552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556401464259) 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, 108181917 + ... + 108205544.

It is an arithmetic number, because the mean of its divisors is an integer number (175273844220).

Almost surely, 2^{2556401464254} is an apocalyptic number.

2556401464254 is an abundant number, since it is smaller than the sum of its proper divisors (3052361550786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2556401464254 is a wasteful number, since it uses less digits than its factorization.

2556401464254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216387656.

The product of its (nonzero) digits is 4608000, while the sum is 48.

The spelling of 2556401464254 in words is "two trillion, five hundred fifty-six billion, four hundred one million, four hundred sixty-four thousand, two hundred fifty-four".