4001433664625 has 16 divisors (see below), whose sum is σ = 4993942109520. Its totient is φ = 3201048921600.

The previous prime is 4001433664609. The next prime is 4001433664633. The reversal of 4001433664625 is 5264663341004.

It can be written as a sum of positive squares in 8 ways, for example, as 1539951938704 + 2461481725921 = 1240948^2 + 1568911^2 .

It is not a de Polignac number, because 4001433664625 - 2⁴ = 4001433664609 is a prime.

It is a super-2 number, since 2×4001433664625² (a number of 26 digits) contains 22 as substring.

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, 3755489 + ... + 4701761.

It is an arithmetic number, because the mean of its divisors is an integer number (312121381845).

Almost surely, 2^{4001433664625} is an apocalyptic number.

It is an amenable number.

4001433664625 is a deficient number, since it is larger than the sum of its proper divisors (992508444895).

4001433664625 is an equidigital number, since it uses as much as digits as its factorization.

4001433664625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980117 (or 980107 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 4001433664625 in words is "four trillion, one billion, four hundred thirty-three million, six hundred sixty-four thousand, six hundred twenty-five".