425515424515525 has 24 divisors (see below), whose sum is σ = 531185306373000. Its totient is φ = 338124524390400.

The previous prime is 425515424515481. The next prime is 425515424515543. The reversal of 425515424515525 is 525515424515524.

It can be written as a sum of positive squares in 12 ways, for example, as 346859261208964 + 78656163306561 = 18624158^2 + 8868831^2 .

It is not a de Polignac number, because 425515424515525 - 2¹¹ = 425515424513477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447303385 + ... + 448253665.

It is an arithmetic number, because the mean of its divisors is an integer number (22132721098875).

Almost surely, 2^{425515424515525} is an apocalyptic number.

It is an amenable number.

425515424515525 is a deficient number, since it is larger than the sum of its proper divisors (105669881857475).

425515424515525 is a wasteful number, since it uses less digits than its factorization.

425515424515525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070649 (or 1070644 counting only the distinct ones).

The product of its digits is 40000000, while the sum is 55.

Subtracting 425515424515525 from its reverse (525515424515524), we obtain a palindrome (99999999999999).

The spelling of 425515424515525 in words is "four hundred twenty-five trillion, five hundred fifteen billion, four hundred twenty-four million, five hundred fifteen thousand, five hundred twenty-five".