425425231215 has 128 divisors (see below), whose sum is σ = 788456540160. Its totient is φ = 217505433600.

The previous prime is 425425231213. The next prime is 425425231229. The reversal of 425425231215 is 512132524524.

425425231215 is a `hidden beast` number, since 4 + 2 + 5 + 4 + 2 + 523 + 121 + 5 = 666.

It is not a de Polignac number, because 425425231215 - 2¹ = 425425231213 is a prime.

It is a super-3 number, since 3×425425231215³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425425231215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425425231213) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57400860 + ... + 57408270.

It is an arithmetic number, because the mean of its divisors is an integer number (6159816720).

Almost surely, 2^425425231215 is an apocalyptic number.

425425231215 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

425425231215 is a deficient number, since it is larger than the sum of its proper divisors (363031308945).

425425231215 is a wasteful number, since it uses less digits than its factorization.

425425231215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662 (or 7656 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

Adding to 425425231215 its reverse (512132524524), we get a palindrome (937557755739).

The spelling of 425425231215 in words is "four hundred twenty-five billion, four hundred twenty-five million, two hundred thirty-one thousand, two hundred fifteen".