425781249 has 16 divisors (see below), whose sum is σ = 594284544. Its totient is φ = 270824400.

The previous prime is 425781157. The next prime is 425781253. The reversal of 425781249 is 942187524.

It is a trimorphic number since its cube, 77189742974960328425781249, ends in 425781249.

It is not a de Polignac number, because 425781249 - 2¹⁶ = 425715713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425781249.

It is not an unprimeable number, because it can be changed into a prime (425781299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25639 + ... + 38844.

It is an arithmetic number, because the mean of its divisors is an integer number (37142784).

Almost surely, 2^425781249 is an apocalyptic number.

It is an amenable number.

425781249 is a deficient number, since it is larger than the sum of its proper divisors (168503295).

425781249 is a wasteful number, since it uses less digits than its factorization.

425781249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64588.

The product of its digits is 161280, while the sum is 42.

The square root of 425781249 is about 20634.4674997927. The cubic root of 425781249 is about 752.3077062618.

The spelling of 425781249 in words is "four hundred twenty-five million, seven hundred eighty-one thousand, two hundred forty-nine".