425211581 has 8 divisors (see below), whose sum is σ = 428652000. Its totient is φ = 421779280.

The previous prime is 425211539. The next prime is 425211587. The reversal of 425211581 is 185112524.

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 425211581 - 2⁶ = 425211517 is a prime.

It is a super-2 number, since 2×425211581² = 361609777233039122, 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 (425211587) 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, 143210 + ... + 146148.

It is an arithmetic number, because the mean of its divisors is an integer number (53581500).

Almost surely, 2^425211581 is an apocalyptic number.

It is an amenable number.

425211581 is a deficient number, since it is larger than the sum of its proper divisors (3440419).

425211581 is a wasteful number, since it uses less digits than its factorization.

425211581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059.

The product of its digits is 3200, while the sum is 29.

The square root of 425211581 is about 20620.6590825803. The cubic root of 425211581 is about 751.9720433671.

The spelling of 425211581 in words is "four hundred twenty-five million, two hundred eleven thousand, five hundred eighty-one".