425800261 has 4 divisors (see below), whose sum is σ = 425876512. Its totient is φ = 425724012.

The previous prime is 425800259. The next prime is 425800289. The reversal of 425800261 is 162008524.

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 425800261 - 2¹ = 425800259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425800201) 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, 29025 + ... + 41158.

It is an arithmetic number, because the mean of its divisors is an integer number (106469128).

Almost surely, 2^425800261 is an apocalyptic number.

It is an amenable number.

425800261 is a deficient number, since it is larger than the sum of its proper divisors (76251).

425800261 is an equidigital number, since it uses as much as digits as its factorization.

425800261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76250.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 425800261 is about 20634.9281801512. The cubic root of 425800261 is about 752.3189034523.

Adding to 425800261 its reverse (162008524), we get a palindrome (587808785).

The spelling of 425800261 in words is "four hundred twenty-five million, eight hundred thousand, two hundred sixty-one".