6425690581 has 8 divisors (see below), whose sum is σ = 6661038240. Its totient is φ = 6193589328.

The previous prime is 6425690567. The next prime is 6425690591. The reversal of 6425690581 is 1850965246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6425690581 - 2¹⁷ = 6425559509 is a prime.

It is a super-2 number, since 2×6425690581² = 82578998885504235122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425690561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807571 + ... + 815488.

It is an arithmetic number, because the mean of its divisors is an integer number (832629780).

Almost surely, 2^6425690581 is an apocalyptic number.

It is an amenable number.

6425690581 is a deficient number, since it is larger than the sum of its proper divisors (235347659).

6425690581 is a wasteful number, since it uses less digits than its factorization.

6425690581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623203.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 6425690581 is about 80160.4053195841. The cubic root of 6425690581 is about 1859.1164899601.

The spelling of 6425690581 in words is "six billion, four hundred twenty-five million, six hundred ninety thousand, five hundred eighty-one".