401255215125254 has 16 divisors (see below), whose sum is σ = 687878175384576. Its totient is φ = 171963497689800.

The previous prime is 401255215125211. The next prime is 401255215125257. The reversal of 401255215125254 is 452521512552104.

It is a happy number.

It is a super-2 number, since 2×401255215125254² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401255215125257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251098262 + ... + 252691209.

It is an arithmetic number, because the mean of its divisors is an integer number (42992385961536).

Almost surely, 2^{401255215125254} is an apocalyptic number.

401255215125254 is a deficient number, since it is larger than the sum of its proper divisors (286622960259322).

401255215125254 is a wasteful number, since it uses less digits than its factorization.

401255215125254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503846371.

The product of its (nonzero) digits is 800000, while the sum is 44.

Adding to 401255215125254 its reverse (452521512552104), we get a palindrome (853776727677358).

The spelling of 401255215125254 in words is "four hundred one trillion, two hundred fifty-five billion, two hundred fifteen million, one hundred twenty-five thousand, two hundred fifty-four".