425521706 has 4 divisors (see below), whose sum is σ = 638282562. Its totient is φ = 212760852.

The previous prime is 425521703. The next prime is 425521709. The reversal of 425521706 is 607125524.

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

It is an interprime number because it is at equal distance from previous prime (425521703) and next prime (425521709).

It can be written as a sum of positive squares in only one way, i.e., 419881081 + 5640625 = 20491^2 + 2375^2 .

It is not an unprimeable number, because it can be changed into a prime (425521703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106380425 + ... + 106380428.

Almost surely, 2^425521706 is an apocalyptic number.

425521706 is a deficient number, since it is larger than the sum of its proper divisors (212760856).

425521706 is a wasteful number, since it uses less digits than its factorization.

425521706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212760855.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 425521706 is about 20628.1774764520. The cubic root of 425521706 is about 752.1548140690.

The spelling of 425521706 in words is "four hundred twenty-five million, five hundred twenty-one thousand, seven hundred six".