425715 has 16 divisors (see below), whose sum is σ = 690336. Its totient is φ = 224000.

The previous prime is 425713. The next prime is 425779. The reversal of 425715 is 517524.

It is not a de Polignac number, because 425715 - 2¹ = 425713 is a prime.

It is a super-2 number, since 2×425715² = 362466522450, which contains 22 as substring.

425715 is a lucky number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (425713) 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, 1375 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (43146).

2⁴²⁵⁷¹⁵ is an apocalyptic number.

425715 is a deficient number, since it is larger than the sum of its proper divisors (264621).

425715 is a wasteful number, since it uses less digits than its factorization.

425715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its digits is 1400, while the sum is 24.

The square root of 425715 is about 652.4683900389. The cubic root of 425715 is about 75.2268686054.

Subtracting 425715 from its reverse (517524), we obtain a square (91809 = 303²).

The spelling of 425715 in words is "four hundred twenty-five thousand, seven hundred fifteen".