1662380909025 has 48 divisors (see below), whose sum is σ = 2807230992384. Its totient is φ = 867651727680.

The previous prime is 1662380908967. The next prime is 1662380909047. The reversal of 1662380909025 is 5209090832661.

It is not a de Polignac number, because 1662380909025 - 2¹² = 1662380904929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49625832 + ... + 49659318.

It is an arithmetic number, because the mean of its divisors is an integer number (58483979008).

Almost surely, 2^{1662380909025} is an apocalyptic number.

1662380909025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1662380909025 is a deficient number, since it is larger than the sum of its proper divisors (1144850083359).

1662380909025 is a wasteful number, since it uses less digits than its factorization.

1662380909025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47630 (or 47625 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 1662380909025 in words is "one trillion, six hundred sixty-two billion, three hundred eighty million, nine hundred nine thousand, twenty-five".