425023121 has 4 divisors (see below), whose sum is σ = 426591744. Its totient is φ = 423454500.

The previous prime is 425023087. The next prime is 425023127. The reversal of 425023121 is 121320524.

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 425023121 - 2²² = 420828817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425023093 and 425023102.

It is not an unprimeable number, because it can be changed into a prime (425023127) 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, 783905 + ... + 784446.

It is an arithmetic number, because the mean of its divisors is an integer number (106647936).

Almost surely, 2^425023121 is an apocalyptic number.

It is an amenable number.

425023121 is a deficient number, since it is larger than the sum of its proper divisors (1568623).

425023121 is a wasteful number, since it uses less digits than its factorization.

425023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568622.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 425023121 is about 20616.0888870804. The cubic root of 425023121 is about 751.8609319426.

Adding to 425023121 its reverse (121320524), we get a palindrome (546343645).

The spelling of 425023121 in words is "four hundred twenty-five million, twenty-three thousand, one hundred twenty-one".