1662960825 has 36 divisors (see below), whose sum is σ = 3153763548. Its totient is φ = 834739200.

The previous prime is 1662960821. The next prime is 1662960829. The reversal of 1662960825 is 5280692661.

1662960825 is a `hidden beast` number, since 16 + 6 + 2 + 9 + 608 + 25 = 666.

1662960825 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1662960821) and next prime (1662960829).

It can be written as a sum of positive squares in 6 ways, for example, as 48608784 + 1614352041 = 6972^2 + 40179^2 .

It is not a de Polignac number, because 1662960825 - 2² = 1662960821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1662960821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 213556 + ... + 221205.

It is an arithmetic number, because the mean of its divisors is an integer number (87604543).

Almost surely, 2^1662960825 is an apocalyptic number.

1662960825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1662960825 is a deficient number, since it is larger than the sum of its proper divisors (1490802723).

1662960825 is a wasteful number, since it uses less digits than its factorization.

1662960825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434794 (or 434786 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1662960825 is about 40779.4166829296. The cubic root of 1662960825 is about 1184.7516971602.

The spelling of 1662960825 in words is "one billion, six hundred sixty-two million, nine hundred sixty thousand, eight hundred twenty-five".