855372405 has 16 divisors (see below), whose sum is σ = 1372333824. Its totient is φ = 454952640.

The previous prime is 855372403. The next prime is 855372409. The reversal of 855372405 is 504273558.

It is not a de Polignac number, because 855372405 - 2¹ = 855372403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855372403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72186 + ... + 83195.

It is an arithmetic number, because the mean of its divisors is an integer number (85770864).

Almost surely, 2^855372405 is an apocalyptic number.

It is an amenable number.

855372405 is a deficient number, since it is larger than the sum of its proper divisors (516961419).

855372405 is a wasteful number, since it uses less digits than its factorization.

855372405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155756.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 855372405 is about 29246.7503323019. The cubic root of 855372405 is about 949.2597761038.

The spelling of 855372405 in words is "eight hundred fifty-five million, three hundred seventy-two thousand, four hundred five".