425320451 has 4 divisors (see below), whose sum is σ = 428567304. Its totient is φ = 422073600.

The previous prime is 425320421. The next prime is 425320457. The reversal of 425320451 is 154023524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 425320451 - 2²⁶ = 358211587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425320451.

It is not an unprimeable number, because it can be changed into a prime (425320457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623230 + ... + 1623491.

It is an arithmetic number, because the mean of its divisors is an integer number (107141826).

Almost surely, 2^425320451 is an apocalyptic number.

425320451 is a deficient number, since it is larger than the sum of its proper divisors (3246853).

425320451 is a wasteful number, since it uses less digits than its factorization.

425320451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246852.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 425320451 is about 20623.2987419569. The cubic root of 425320451 is about 752.0362155063.

Adding to 425320451 its reverse (154023524), we get a palindrome (579343975).

The spelling of 425320451 in words is "four hundred twenty-five million, three hundred twenty thousand, four hundred fifty-one".