401425520 has 20 divisors (see below), whose sum is σ = 933314520. Its totient is φ = 160570176.

The previous prime is 401425513. The next prime is 401425553. The reversal of 401425520 is 25524104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×401425520² = 322284896214540800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2508830 + ... + 2508989.

It is an arithmetic number, because the mean of its divisors is an integer number (46665726).

Almost surely, 2^401425520 is an apocalyptic number.

401425520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401425520 is an abundant number, since it is smaller than the sum of its proper divisors (531889000).

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

401425520 is a wasteful number, since it uses less digits than its factorization.

401425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5017832 (or 5017826 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 401425520 is about 20035.6063047765. The cubic root of 401425520 is about 737.6805387750.

Adding to 401425520 its reverse (25524104), we get a palindrome (426949624).

The spelling of 401425520 in words is "four hundred one million, four hundred twenty-five thousand, five hundred twenty".