401225064040 has 32 divisors (see below), whose sum is σ = 915471279360. Its totient is φ = 158229601600.

The previous prime is 401225064029. The next prime is 401225064047. The reversal of 401225064040 is 40460522104.

It is a super-2 number, since 2×401225064040² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401225064047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70635376 + ... + 70641055.

It is an arithmetic number, because the mean of its divisors is an integer number (28608477480).

Almost surely, 2^401225064040 is an apocalyptic number.

401225064040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401225064040 is an abundant number, since it is smaller than the sum of its proper divisors (514246215320).

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

401225064040 is a wasteful number, since it uses less digits than its factorization.

401225064040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141276513 (or 141276509 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 401225064040 its reverse (40460522104), we get a palindrome (441685586144).

The spelling of 401225064040 in words is "four hundred one billion, two hundred twenty-five million, sixty-four thousand, forty".