431421187025 has 6 divisors (see below), whose sum is σ = 534962271942. Its totient is φ = 345136949600.

The previous prime is 431421187019. The next prime is 431421187039. The reversal of 431421187025 is 520781124134.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3193606144 + 428227580881 = 56512^2 + 654391^2 .

It is not a de Polignac number, because 431421187025 - 2⁴ = 431421187009 is a prime.

It is a super-2 number, since 2×431421187025² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431421187025.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8628423716 + ... + 8628423765.

It is an arithmetic number, because the mean of its divisors is an integer number (89160378657).

Almost surely, 2^431421187025 is an apocalyptic number.

It is an amenable number.

431421187025 is a deficient number, since it is larger than the sum of its proper divisors (103541084917).

431421187025 is a wasteful number, since it uses less digits than its factorization.

431421187025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17256847491 (or 17256847486 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 431421187025 in words is "four hundred thirty-one billion, four hundred twenty-one million, one hundred eighty-seven thousand, twenty-five".