855955525 has 12 divisors (see below), whose sum is σ = 1123819812. Its totient is φ = 644483840.

The previous prime is 855955523. The next prime is 855955531. The reversal of 855955525 is 525559558.

It can be written as a sum of positive squares in 6 ways, for example, as 79441569 + 776513956 = 8913^2 + 27866^2 .

It is not a de Polignac number, because 855955525 - 2¹ = 855955523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855955523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1006582 + ... + 1007431.

It is an arithmetic number, because the mean of its divisors is an integer number (93651651).

Almost surely, 2^855955525 is an apocalyptic number.

855955525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

855955525 is a deficient number, since it is larger than the sum of its proper divisors (267864287).

855955525 is a wasteful number, since it uses less digits than its factorization.

855955525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014040 (or 2014035 counting only the distinct ones).

The product of its digits is 2250000, while the sum is 49.

The square root of 855955525 is about 29256.7176046801. The cubic root of 855955525 is about 949.4754352410.

The spelling of 855955525 in words is "eight hundred fifty-five million, nine hundred fifty-five thousand, five hundred twenty-five".