42055025 has 12 divisors (see below), whose sum is σ = 55216332. Its totient is φ = 31664640.

The previous prime is 42055019. The next prime is 42055033. The reversal of 42055025 is 52055024.

It can be written as a sum of positive squares in 6 ways, for example, as 12769 + 42042256 = 113^2 + 6484^2 .

It is not a de Polignac number, because 42055025 - 2¹⁶ = 41989489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49052 + ... + 49901.

It is an arithmetic number, because the mean of its divisors is an integer number (4601361).

Almost surely, 2^42055025 is an apocalyptic number.

It is an amenable number.

42055025 is a deficient number, since it is larger than the sum of its proper divisors (13161307).

42055025 is a wasteful number, since it uses less digits than its factorization.

42055025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98980 (or 98975 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 42055025 is about 6484.9845797812. The cubic root of 42055025 is about 347.7543985353.

Subtracting 42055025 from its reverse (52055024), we obtain a palindrome (9999999).

The spelling of 42055025 in words is "forty-two million, fifty-five thousand, twenty-five".