42512231525 has 24 divisors (see below), whose sum is σ = 53290544544. Its totient is φ = 33639566400.

The previous prime is 42512231501. The next prime is 42512231533. The reversal of 42512231525 is 52513221524.

It is not a de Polignac number, because 42512231525 - 2²⁶ = 42445122661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42512231491 and 42512231500.

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, 1756154 + ... + 1780196.

It is an arithmetic number, because the mean of its divisors is an integer number (2220439356).

Almost surely, 2^42512231525 is an apocalyptic number.

It is an amenable number.

42512231525 is a deficient number, since it is larger than the sum of its proper divisors (10778313019).

42512231525 is a wasteful number, since it uses less digits than its factorization.

42512231525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24821 (or 24816 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 42512231525 in words is "forty-two billion, five hundred twelve million, two hundred thirty-one thousand, five hundred twenty-five".