425952421 has 4 divisors (see below), whose sum is σ = 426317344. Its totient is φ = 425587500.

The previous prime is 425952413. The next prime is 425952491. The reversal of 425952421 is 124259524.

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 425952421 - 2³ = 425952413 is a prime.

It is a super-2 number, since 2×425952421² = 362870929911522482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425952491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180705 + ... + 183046.

It is an arithmetic number, because the mean of its divisors is an integer number (106579336).

Almost surely, 2^425952421 is an apocalyptic number.

It is an amenable number.

425952421 is a deficient number, since it is larger than the sum of its proper divisors (364923).

425952421 is a wasteful number, since it uses less digits than its factorization.

425952421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364922.

The product of its digits is 28800, while the sum is 34.

The square root of 425952421 is about 20638.6148033244. The cubic root of 425952421 is about 752.4085066629.

The spelling of 425952421 in words is "four hundred twenty-five million, nine hundred fifty-two thousand, four hundred twenty-one".