401425251 has 8 divisors (see below), whose sum is σ = 535966800. Its totient is φ = 267250272.

The previous prime is 401425243. The next prime is 401425289. The reversal of 401425251 is 152524104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401425251 - 2³ = 401425243 is a prime.

It is a super-2 number, since 2×401425251² = 322284464280826002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401425291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89076 + ... + 93473.

It is an arithmetic number, because the mean of its divisors is an integer number (66995850).

Almost surely, 2^401425251 is an apocalyptic number.

401425251 is a deficient number, since it is larger than the sum of its proper divisors (134541549).

401425251 is a wasteful number, since it uses less digits than its factorization.

401425251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183285.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 401425251 is about 20035.5995917267. The cubic root of 401425251 is about 737.6803739988.

Adding to 401425251 its reverse (152524104), we get a palindrome (553949355).

The spelling of 401425251 in words is "four hundred one million, four hundred twenty-five thousand, two hundred fifty-one".