1662025365 has 256 divisors, whose sum is σ = 4064256000. Its totient is φ = 635040000.

The previous prime is 1662025331. The next prime is 1662025367. The reversal of 1662025365 is 5635202661.

It is a happy number.

1662025365 is a `hidden beast` number, since 1 + 6 + 620 + 25 + 3 + 6 + 5 = 666.

It is not a de Polignac number, because 1662025365 - 2⁸ = 1662025109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662025367) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 6621490 + ... + 6621740.

It is an arithmetic number, because the mean of its divisors is an integer number (15876000).

Almost surely, 2^1662025365 is an apocalyptic number.

1662025365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1662025365 is an abundant number, since it is smaller than the sum of its proper divisors (2402230635).

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

1662025365 is a wasteful number, since it uses less digits than its factorization.

1662025365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1662025365 is about 40767.9453124633. The cubic root of 1662025365 is about 1184.5295039722.

The spelling of 1662025365 in words is "one billion, six hundred sixty-two million, twenty-five thousand, three hundred sixty-five".