425540423 has 12 divisors (see below), whose sum is σ = 534564240. Its totient is φ = 331589280.

The previous prime is 425540399. The next prime is 425540429. The reversal of 425540423 is 324045524.

It is not a de Polignac number, because 425540423 - 2²⁸ = 157104967 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425540429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250358 + ... + 252051.

It is an arithmetic number, because the mean of its divisors is an integer number (44547020).

Almost surely, 2^425540423 is an apocalyptic number.

425540423 is a deficient number, since it is larger than the sum of its proper divisors (109023817).

425540423 is a wasteful number, since it uses less digits than its factorization.

425540423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502438 (or 502427 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 425540423 is about 20628.6311470248. The cubic root of 425540423 is about 752.1658420025.

Adding to 425540423 its reverse (324045524), we get a palindrome (749585947).

The spelling of 425540423 in words is "four hundred twenty-five million, five hundred forty thousand, four hundred twenty-three".