25435445000406 has 48 divisors (see below), whose sum is σ = 59184552761280. Its totient is φ = 7266261591120.

The previous prime is 25435445000351. The next prime is 25435445000429. The reversal of 25435445000406 is 60400054453452.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3878796 + ... + 8118863.

It is an arithmetic number, because the mean of its divisors is an integer number (1233011515860).

Almost surely, 2^{25435445000406} is an apocalyptic number.

25435445000406 is an abundant number, since it is smaller than the sum of its proper divisors (33749107760874).

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

25435445000406 is a wasteful number, since it uses less digits than its factorization.

25435445000406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12004889 (or 12004882 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 25435445000406 its reverse (60400054453452), we get a palindrome (85835499453858).

The spelling of 25435445000406 in words is "twenty-five trillion, four hundred thirty-five billion, four hundred forty-five million, four hundred six", and thus it is an aban number.