425657123 has 4 divisors (see below), whose sum is σ = 426546240. Its totient is φ = 424768008.

The previous prime is 425657119. The next prime is 425657131. The reversal of 425657123 is 321756524.

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 425657123 - 2² = 425657119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425657143) 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, 443840 + ... + 444797.

It is an arithmetic number, because the mean of its divisors is an integer number (106636560).

Almost surely, 2^425657123 is an apocalyptic number.

425657123 is a deficient number, since it is larger than the sum of its proper divisors (889117).

425657123 is an equidigital number, since it uses as much as digits as its factorization.

425657123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889116.

The product of its digits is 50400, while the sum is 35.

The square root of 425657123 is about 20631.4595460428. The cubic root of 425657123 is about 752.2345935838.

The spelling of 425657123 in words is "four hundred twenty-five million, six hundred fifty-seven thousand, one hundred twenty-three".