1040666451625 has 32 divisors (see below), whose sum is σ = 1387318671648. Its totient is φ = 776626278400.

The previous prime is 1040666451613. The next prime is 1040666451677. The reversal of 1040666451625 is 5261546660401.

It can be written as a sum of positive squares in 16 ways, for example, as 1038338582121 + 2327869504 = 1018989^2 + 48248^2 .

It is not a de Polignac number, because 1040666451625 - 2⁵ = 1040666451593 is a prime.

It is a super-3 number, since 3×1040666451625³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1926802 + ... + 2407051.

It is an arithmetic number, because the mean of its divisors is an integer number (43353708489).

Almost surely, 2^{1040666451625} is an apocalyptic number.

It is an amenable number.

1040666451625 is a deficient number, since it is larger than the sum of its proper divisors (346652220023).

1040666451625 is a wasteful number, since it uses less digits than its factorization.

1040666451625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333998 (or 4333988 counting only the distinct ones).

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

The spelling of 1040666451625 in words is "one trillion, forty billion, six hundred sixty-six million, four hundred fifty-one thousand, six hundred twenty-five".