401225012005551 has 16 divisors (see below), whose sum is σ = 565478986329600. Its totient is φ = 252344997632448.

The previous prime is 401225012005457. The next prime is 401225012005567. The reversal of 401225012005551 is 155500210522104.

It is not a de Polignac number, because 401225012005551 - 2⁷ = 401225012005423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401225012009551) 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, 14726001646 + ... + 14726028891.

It is an arithmetic number, because the mean of its divisors is an integer number (35342436645600).

Almost surely, 2^{401225012005551} is an apocalyptic number.

401225012005551 is a deficient number, since it is larger than the sum of its proper divisors (164253974324049).

401225012005551 is a wasteful number, since it uses less digits than its factorization.

401225012005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29452030798.

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 401225012005551 its reverse (155500210522104), we get a palindrome (556725222527655).

The spelling of 401225012005551 in words is "four hundred one trillion, two hundred twenty-five billion, twelve million, five thousand, five hundred fifty-one".