424242425 has 6 divisors (see below), whose sum is σ = 526060638. Its totient is φ = 339393920.

The previous prime is 424242419. The next prime is 424242449. The reversal of 424242425 is 524242424.

It can be written as a sum of positive squares in 3 ways, for example, as 31449664 + 392792761 = 5608^2 + 19819^2 .

It is not a de Polignac number, because 424242425 - 2¹² = 424238329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8484824 + ... + 8484873.

It is an arithmetic number, because the mean of its divisors is an integer number (87676773).

Almost surely, 2^424242425 is an apocalyptic number.

It is an amenable number.

424242425 is a deficient number, since it is larger than the sum of its proper divisors (101818213).

424242425 is a wasteful number, since it uses less digits than its factorization.

424242425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16969707 (or 16969702 counting only the distinct ones).

The product of its digits is 20480, while the sum is 29.

The square root of 424242425 is about 20597.1460401678. The cubic root of 424242425 is about 751.4003024289.

Adding to 424242425 its reverse (524242424), we get a palindrome (948484849).

Subtracting 424242425 from its reverse (524242424), we obtain a palindrome (99999999).

The spelling of 424242425 in words is "four hundred twenty-four million, two hundred forty-two thousand, four hundred twenty-five".