425243879 has 4 divisors (see below), whose sum is σ = 428592384. Its totient is φ = 421895376.

The previous prime is 425243839. The next prime is 425243881. The reversal of 425243879 is 978342524.

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 425243879 - 2¹² = 425239783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425243809) 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, 1674062 + ... + 1674315.

It is an arithmetic number, because the mean of its divisors is an integer number (107148096).

Almost surely, 2^425243879 is an apocalyptic number.

425243879 is a deficient number, since it is larger than the sum of its proper divisors (3348505).

425243879 is a wasteful number, since it uses less digits than its factorization.

425243879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348504.

The product of its digits is 483840, while the sum is 44.

The square root of 425243879 is about 20621.4422143554. The cubic root of 425243879 is about 751.9910821854.

The spelling of 425243879 in words is "four hundred twenty-five million, two hundred forty-three thousand, eight hundred seventy-nine".