425571394 has 8 divisors (see below), whose sum is σ = 639504828. Its totient is φ = 212403120.

The previous prime is 425571359. The next prime is 425571403. The reversal of 425571394 is 493175524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400200025 + 25371369 = 20005^2 + 5037^2 .

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

It is a super-2 number, since 2×425571394² = 362222022782206472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189897 + ... + 192124.

Almost surely, 2^425571394 is an apocalyptic number.

425571394 is a deficient number, since it is larger than the sum of its proper divisors (213933434).

425571394 is a wasteful number, since it uses less digits than its factorization.

425571394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382580.

The product of its digits is 151200, while the sum is 40.

The square root of 425571394 is about 20629.3818133264. The cubic root of 425571394 is about 752.1840892022.

The spelling of 425571394 in words is "four hundred twenty-five million, five hundred seventy-one thousand, three hundred ninety-four".