331655051025 has 27 divisors (see below), whose sum is σ = 594046519729. Its totient is φ = 176878086720.

The previous prime is 331655051017. The next prime is 331655051029. The reversal of 331655051025 is 520150556133.

The square root of 331655051025 is 575895.

It is a perfect power (a square), and thus also a powerful number.

331655051025 is a `hidden beast` number, since 3 + 31 + 6 + 550 + 51 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35645062401 + 296009988624 = 188799^2 + 544068^2 .

It is not a de Polignac number, because 331655051025 - 2³ = 331655051017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331655051029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8619229 + ... + 8657621.

Almost surely, 2^331655051025 is an apocalyptic number.

331655051025 is the 575895-th square number.

331655051025 is the 287948-th centered octagonal number.

It is an amenable number.

331655051025 is a deficient number, since it is larger than the sum of its proper divisors (262391468704).

331655051025 is an frugal number, since it uses more digits than its factorization.

331655051025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76802 (or 38401 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

Multiplying 331655051025 by its sum of digits (36), we get a square (11939581836900 = 3455370²).

The spelling of 331655051025 in words is "three hundred thirty-one billion, six hundred fifty-five million, fifty-one thousand, twenty-five".