42246525 has 12 divisors (see below), whose sum is σ = 69847712. Its totient is φ = 22531440.

The previous prime is 42246509. The next prime is 42246527. The reversal of 42246525 is 52564224.

42246525 = 53² + 54² + ... + 502².

It is a happy number.

It is not a de Polignac number, because 42246525 - 2⁴ = 42246509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42246492 and 42246501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42246527) 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, 281569 + ... + 281718.

Almost surely, 2^42246525 is an apocalyptic number.

It is an amenable number.

42246525 is a deficient number, since it is larger than the sum of its proper divisors (27601187).

42246525 is a wasteful number, since it uses less digits than its factorization.

42246525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563300 (or 563295 counting only the distinct ones).

The product of its digits is 19200, while the sum is 30.

The square root of 42246525 is about 6499.7326868111. The cubic root of 42246525 is about 348.2814393261.

It can be divided in two parts, 4224 and 6525, that multiplied together give a triangular number (27561600 = T₇₄₂₄).

The spelling of 42246525 in words is "forty-two million, two hundred forty-six thousand, five hundred twenty-five".