1061666025 has 48 divisors (see below), whose sum is σ = 2021965824. Its totient is φ = 481481280.

The previous prime is 1061666009. The next prime is 1061666057. The reversal of 1061666025 is 5206661601.

It is not a de Polignac number, because 1061666025 - 2⁴ = 1061666009 is a prime.

It is a super-2 number, since 2×1061666025² = 2254269497278601250, which contains 22 as substring.

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, 58714 + ... + 74636.

It is an arithmetic number, because the mean of its divisors is an integer number (42124288).

Almost surely, 2^1061666025 is an apocalyptic number.

1061666025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061666025 is a deficient number, since it is larger than the sum of its proper divisors (960299799).

1061666025 is a wasteful number, since it uses less digits than its factorization.

1061666025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16070 (or 16065 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1061666025 is about 32583.2169222132. The cubic root of 1061666025 is about 1020.1467253365.

The spelling of 1061666025 in words is "one billion, sixty-one million, six hundred sixty-six thousand, twenty-five".