425897727 has 4 divisors (see below), whose sum is σ = 567863640. Its totient is φ = 283931816.

The previous prime is 425897653. The next prime is 425897767. The reversal of 425897727 is 727798524.

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 425897727 - 2⁷ = 425897599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425897727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425897767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70982952 + ... + 70982957.

It is an arithmetic number, because the mean of its divisors is an integer number (141965910).

Almost surely, 2^425897727 is an apocalyptic number.

425897727 is a deficient number, since it is larger than the sum of its proper divisors (141965913).

425897727 is a wasteful number, since it uses less digits than its factorization.

425897727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141965912.

The product of its digits is 1975680, while the sum is 51.

The square root of 425897727 is about 20637.2897203097. The cubic root of 425897727 is about 752.3763011940.

It can be divided in two parts, 425897 and 727, that added together give a palindrome (426624).

The spelling of 425897727 in words is "four hundred twenty-five million, eight hundred ninety-seven thousand, seven hundred twenty-seven".