425731457 has 4 divisors (see below), whose sum is σ = 433764180. Its totient is φ = 417698736.

The previous prime is 425731429. The next prime is 425731469. The reversal of 425731457 is 754137524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 236421376 + 189310081 = 15376^2 + 13759^2 .

It is a cyclic number.

It is not a de Polignac number, because 425731457 - 2⁶ = 425731393 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 425731457.

It is not an unprimeable number, because it can be changed into a prime (425731477) 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, 4016282 + ... + 4016387.

It is an arithmetic number, because the mean of its divisors is an integer number (108441045).

Almost surely, 2^425731457 is an apocalyptic number.

It is an amenable number.

425731457 is a deficient number, since it is larger than the sum of its proper divisors (8032723).

425731457 is an equidigital number, since it uses as much as digits as its factorization.

425731457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8032722.

The product of its digits is 117600, while the sum is 38.

The square root of 425731457 is about 20633.2609395607. The cubic root of 425731457 is about 752.2783794924.

The spelling of 425731457 in words is "four hundred twenty-five million, seven hundred thirty-one thousand, four hundred fifty-seven".