42446525 has 12 divisors (see below), whose sum is σ = 57418944. Its totient is φ = 30870000.

The previous prime is 42446519. The next prime is 42446527. The reversal of 42446525 is 52564424.

42446525 = 1291² + 1292² + ... + 1315².

It is not a de Polignac number, because 42446525 - 2¹⁸ = 42184381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42446491 and 42446500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42446527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76901 + ... + 77450.

It is an arithmetic number, because the mean of its divisors is an integer number (4784912).

Almost surely, 2^42446525 is an apocalyptic number.

It is an amenable number.

42446525 is a deficient number, since it is larger than the sum of its proper divisors (14972419).

42446525 is a wasteful number, since it uses less digits than its factorization.

42446525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154372 (or 154367 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 42446525 is about 6515.0997689982. The cubic root of 42446525 is about 348.8301760227.

The spelling of 42446525 in words is "forty-two million, four hundred forty-six thousand, five hundred twenty-five".