404451212525 has 12 divisors (see below), whose sum is σ = 507561909792. Its totient is φ = 319662643440.

The previous prime is 404451212507. The next prime is 404451212527. The reversal of 404451212525 is 525212154404.

It is not a de Polignac number, because 404451212525 - 2¹⁰ = 404451211501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404451212527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97456049 + ... + 97460198.

It is an arithmetic number, because the mean of its divisors is an integer number (42296825816).

Almost surely, 2^404451212525 is an apocalyptic number.

It is an amenable number.

404451212525 is a deficient number, since it is larger than the sum of its proper divisors (103110697267).

404451212525 is a wasteful number, since it uses less digits than its factorization.

404451212525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194916340 (or 194916335 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

Adding to 404451212525 its reverse (525212154404), we get a palindrome (929663366929).

The spelling of 404451212525 in words is "four hundred four billion, four hundred fifty-one million, two hundred twelve thousand, five hundred twenty-five".