425531523 has 4 divisors (see below), whose sum is σ = 567375368. Its totient is φ = 283687680.

The previous prime is 425531521. The next prime is 425531537. The reversal of 425531523 is 325135524.

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

It is not a de Polignac number, because 425531523 - 2¹ = 425531521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425531521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70921918 + ... + 70921923.

It is an arithmetic number, because the mean of its divisors is an integer number (141843842).

Almost surely, 2^425531523 is an apocalyptic number.

425531523 is a deficient number, since it is larger than the sum of its proper divisors (141843845).

425531523 is a wasteful number, since it uses less digits than its factorization.

425531523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141843844.

The product of its digits is 18000, while the sum is 30.

The square root of 425531523 is about 20628.4154262997. The cubic root of 425531523 is about 752.1605982213.

It can be divided in two parts, 4255 and 31523, that added together give a triangular number (35778 = T₂₆₇).

The spelling of 425531523 in words is "four hundred twenty-five million, five hundred thirty-one thousand, five hundred twenty-three".