425889557 has 4 divisors (see below), whose sum is σ = 426157836. Its totient is φ = 425621280.

The previous prime is 425889533. The next prime is 425889589. The reversal of 425889557 is 755988524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 177795556 + 248094001 = 13334^2 + 15751^2 .

It is a cyclic number.

It is not a de Polignac number, because 425889557 - 2⁶ = 425889493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425889499 and 425889508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425889757) 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, 131744 + ... + 134937.

It is an arithmetic number, because the mean of its divisors is an integer number (106539459).

Almost surely, 2^425889557 is an apocalyptic number.

It is an amenable number.

425889557 is a deficient number, since it is larger than the sum of its proper divisors (268279).

425889557 is a wasteful number, since it uses less digits than its factorization.

425889557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268278.

The product of its digits is 4032000, while the sum is 53.

The square root of 425889557 is about 20637.0917767015. The cubic root of 425889557 is about 752.3714902161.

The spelling of 425889557 in words is "four hundred twenty-five million, eight hundred eighty-nine thousand, five hundred fifty-seven".