405032121025 has 48 divisors (see below), whose sum is σ = 577663166080. Its totient is φ = 275960908800.

The previous prime is 405032121017. The next prime is 405032121107. The reversal of 405032121025 is 520121230504.

It is not a de Polignac number, because 405032121025 - 2³ = 405032121017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41077546 + ... + 41087404.

Almost surely, 2^405032121025 is an apocalyptic number.

It is an amenable number.

405032121025 is a deficient number, since it is larger than the sum of its proper divisors (172631045055).

405032121025 is a wasteful number, since it uses less digits than its factorization.

405032121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11354 (or 11349 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 405032121025 its reverse (520121230504), we get a palindrome (925153351529).

The spelling of 405032121025 in words is "four hundred five billion, thirty-two million, one hundred twenty-one thousand, twenty-five".