6466040125 has 16 divisors (see below), whose sum is σ = 8072093952. Its totient is φ = 5171245200.

The previous prime is 6466040089. The next prime is 6466040137. The reversal of 6466040125 is 5210406646.

It is not a de Polignac number, because 6466040125 - 2⁷ = 6466039997 is a prime.

It is a super-2 number, since 2×6466040125² = 83619349796220031250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567232 + ... + 578518.

It is an arithmetic number, because the mean of its divisors is an integer number (504505872).

Almost surely, 2^6466040125 is an apocalyptic number.

It is an amenable number.

6466040125 is a deficient number, since it is larger than the sum of its proper divisors (1606053827).

6466040125 is a wasteful number, since it uses less digits than its factorization.

6466040125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885 (or 15875 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 6466040125 is about 80411.6914695867. The cubic root of 6466040125 is about 1862.9997577866. Note that the first 3 decimals are identical.

The spelling of 6466040125 in words is "six billion, four hundred sixty-six million, forty thousand, one hundred twenty-five".