42513025 has 24 divisors (see below), whose sum is σ = 54800064. Its totient is φ = 32692800.

The previous prime is 42513017. The next prime is 42513067. The reversal of 42513025 is 52031524.

It is not a de Polignac number, because 42513025 - 2³ = 42513017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42512987 and 42513005.

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, 76047 + ... + 76603.

It is an arithmetic number, because the mean of its divisors is an integer number (2283336).

Almost surely, 2^42513025 is an apocalyptic number.

It is an amenable number.

42513025 is a deficient number, since it is larger than the sum of its proper divisors (12287039).

42513025 is a wasteful number, since it uses less digits than its factorization.

42513025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42513025 is about 6520.2013005735. The cubic root of 42513025 is about 349.0122490590.

Adding to 42513025 its reverse (52031524), we get a palindrome (94544549).

The spelling of 42513025 in words is "forty-two million, five hundred thirteen thousand, twenty-five".