425516785 has 8 divisors (see below), whose sum is σ = 518991336. Its totient is φ = 334832640.

The previous prime is 425516779. The next prime is 425516827. The reversal of 425516785 is 587615524.

It can be written as a sum of positive squares in 4 ways, for example, as 2401 + 425514384 = 49^2 + 20628^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 425516785 - 2¹⁹ = 424992497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697264 + ... + 697873.

It is an arithmetic number, because the mean of its divisors is an integer number (64873917).

Almost surely, 2^425516785 is an apocalyptic number.

It is an amenable number.

425516785 is a deficient number, since it is larger than the sum of its proper divisors (93474551).

425516785 is a wasteful number, since it uses less digits than its factorization.

425516785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395203.

The product of its digits is 336000, while the sum is 43.

The square root of 425516785 is about 20628.0581975134. The cubic root of 425516785 is about 752.1519145944.

The spelling of 425516785 in words is "four hundred twenty-five million, five hundred sixteen thousand, seven hundred eighty-five".