425220442 has 4 divisors (see below), whose sum is σ = 637830666. Its totient is φ = 212610220.

The previous prime is 425220427. The next prime is 425220449. The reversal of 425220442 is 244022524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 409212441 + 16008001 = 20229^2 + 4001^2 .

It is not an unprimeable number, because it can be changed into a prime (425220449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106305109 + ... + 106305112.

Almost surely, 2^425220442 is an apocalyptic number.

425220442 is a deficient number, since it is larger than the sum of its proper divisors (212610224).

425220442 is a wasteful number, since it uses less digits than its factorization.

425220442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212610223.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 425220442 is about 20620.8739388029. The cubic root of 425220442 is about 751.9772667886.

Adding to 425220442 its reverse (244022524), we get a palindrome (669242966).

The spelling of 425220442 in words is "four hundred twenty-five million, two hundred twenty thousand, four hundred forty-two".