425405394 has 12 divisors (see below), whose sum is σ = 921711726. Its totient is φ = 141801792.

The previous prime is 425405371. The next prime is 425405411. The reversal of 425405394 is 493504524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 419717169 + 5688225 = 20487^2 + 2385^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11816799 + ... + 11816834.

Almost surely, 2^425405394 is an apocalyptic number.

425405394 is an abundant number, since it is smaller than the sum of its proper divisors (496306332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425405394 is a wasteful number, since it uses less digits than its factorization.

425405394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23633641 (or 23633638 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 425405394 is about 20625.3580332561. The cubic root of 425405394 is about 752.0862765524.

The spelling of 425405394 in words is "four hundred twenty-five million, four hundred five thousand, three hundred ninety-four".