401226425221256 has 8 divisors (see below), whose sum is σ = 752299547289870. Its totient is φ = 200613212610624.

The previous prime is 401226425221249. The next prime is 401226425221261. The reversal of 401226425221256 is 652122524622104.

It can be written as a sum of positive squares in only one way, i.e., 313327737536356 + 87898687684900 = 17701066^2 + 9375430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25076651576321 + ... + 25076651576336.

Almost surely, 2^{401226425221256} is an apocalyptic number.

It is an amenable number.

401226425221256 is a deficient number, since it is larger than the sum of its proper divisors (351073122068614).

401226425221256 is a wasteful number, since it uses less digits than its factorization.

401226425221256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50153303152663 (or 50153303152659 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 401226425221256 in words is "four hundred one trillion, two hundred twenty-six billion, four hundred twenty-five million, two hundred twenty-one thousand, two hundred fifty-six".