425432251 has 4 divisors (see below), whose sum is σ = 439155904. Its totient is φ = 411708600.

The previous prime is 425432243. The next prime is 425432281. The reversal of 425432251 is 152234524.

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

It is a cyclic number.

It is not a de Polignac number, because 425432251 - 2³ = 425432243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425432221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6861780 + ... + 6861841.

It is an arithmetic number, because the mean of its divisors is an integer number (109788976).

Almost surely, 2^425432251 is an apocalyptic number.

425432251 is a deficient number, since it is larger than the sum of its proper divisors (13723653).

425432251 is a wasteful number, since it uses less digits than its factorization.

425432251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13723652.

The product of its digits is 9600, while the sum is 28.

The square root of 425432251 is about 20626.0090904663. The cubic root of 425432251 is about 752.1021033037.

Adding to 425432251 its reverse (152234524), we get a palindrome (577666775).

The spelling of 425432251 in words is "four hundred twenty-five million, four hundred thirty-two thousand, two hundred fifty-one".