1061646465025 has 24 divisors (see below), whose sum is σ = 1347355839104. Its totient is φ = 829381291200.

The previous prime is 1061646465017. The next prime is 1061646465029. The reversal of 1061646465025 is 5205646461601.

It is not a de Polignac number, because 1061646465025 - 2³ = 1061646465017 is a prime.

It is a super-2 number, since 2×1061646465025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061646465029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4834360 + ... + 5049190.

Almost surely, 2^{1061646465025} is an apocalyptic number.

It is an amenable number.

1061646465025 is a deficient number, since it is larger than the sum of its proper divisors (285709374079).

1061646465025 is a wasteful number, since it uses less digits than its factorization.

1061646465025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219481 (or 219476 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 1061646465025 in words is "one trillion, sixty-one billion, six hundred forty-six million, four hundred sixty-five thousand, twenty-five".