42045025 has 24 divisors (see below), whose sum is σ = 58103424. Its totient is φ = 29918400.

The previous prime is 42045019. The next prime is 42045037. The reversal of 42045025 is 52054024.

It is not a de Polignac number, because 42045025 - 2²⁵ = 8490593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42044987 and 42045005.

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, 11299 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (2420976).

Almost surely, 2^42045025 is an apocalyptic number.

It is an amenable number.

42045025 is a deficient number, since it is larger than the sum of its proper divisors (16058399).

42045025 is a wasteful number, since it uses less digits than its factorization.

42045025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321 (or 3316 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42045025 is about 6484.2135220858. The cubic root of 42045025 is about 347.7268329062.

Adding to 42045025 its reverse (52054024), we get a palindrome (94099049).

It can be divided in two parts, 4204 and 5025, that added together give a palindrome (9229).

The spelling of 42045025 in words is "forty-two million, forty-five thousand, twenty-five".