425864429 has 4 divisors (see below), whose sum is σ = 427234080. Its totient is φ = 424494780.

The previous prime is 425864359. The next prime is 425864437. The reversal of 425864429 is 924468524.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425864429 - 2²⁴ = 409087213 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 425864429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425864479) 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, 684359 + ... + 684980.

It is an arithmetic number, because the mean of its divisors is an integer number (106808520).

Almost surely, 2^425864429 is an apocalyptic number.

It is an amenable number.

425864429 is a deficient number, since it is larger than the sum of its proper divisors (1369651).

425864429 is a wasteful number, since it uses less digits than its factorization.

425864429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369650.

The product of its digits is 552960, while the sum is 44.

The square root of 425864429 is about 20636.4829610086. The cubic root of 425864429 is about 752.3566929818.

The spelling of 425864429 in words is "four hundred twenty-five million, eight hundred sixty-four thousand, four hundred twenty-nine".