1025604405 has 48 divisors (see below), whose sum is σ = 2054557440. Its totient is φ = 463567104.

The previous prime is 1025604397. The next prime is 1025604413. The reversal of 1025604405 is 5044065201.

1025604405 is a `hidden beast` number, since 1 + 0 + 256 + 0 + 4 + 405 = 666.

It is an interprime number because it is at equal distance from previous prime (1025604397) and next prime (1025604413).

It is not a de Polignac number, because 1025604405 - 2³ = 1025604397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9744 + ... + 46326.

It is an arithmetic number, because the mean of its divisors is an integer number (42803280).

Almost surely, 2^1025604405 is an apocalyptic number.

1025604405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025604405 is an abundant number, since it is smaller than the sum of its proper divisors (1028953035).

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

1025604405 is a wasteful number, since it uses less digits than its factorization.

1025604405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36690 (or 36687 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1025604405 is about 32025.0590163391. The cubic root of 1025604405 is about 1008.4629776312.

Adding to 1025604405 its reverse (5044065201), we get a palindrome (6069669606).

The spelling of 1025604405 in words is "one billion, twenty-five million, six hundred four thousand, four hundred five".