400254252255 has 64 divisors (see below), whose sum is σ = 835962301440. Its totient is φ = 179134761600.

The previous prime is 400254252199. The next prime is 400254252269. The reversal of 400254252255 is 552252452004.

400254252255 is a `hidden beast` number, since 4 + 0 + 0 + 2 + 5 + 425 + 225 + 5 = 666.

It is not a de Polignac number, because 400254252255 - 2¹⁰ = 400254251231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10347291 + ... + 10385900.

It is an arithmetic number, because the mean of its divisors is an integer number (13061910960).

Almost surely, 2^400254252255 is an apocalyptic number.

400254252255 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

400254252255 is an abundant number, since it is smaller than the sum of its proper divisors (435708049185).

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

400254252255 is a wasteful number, since it uses less digits than its factorization.

400254252255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20733229 (or 20733223 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

The spelling of 400254252255 in words is "four hundred billion, two hundred fifty-four million, two hundred fifty-two thousand, two hundred fifty-five".