42177025 has 12 divisors (see below), whose sum is σ = 57054384. Its totient is φ = 30674000.

The previous prime is 42177007. The next prime is 42177061. The reversal of 42177025 is 52077124.

It is not a de Polignac number, because 42177025 - 2⁵ = 42176993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42176984 and 42177002.

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, 76411 + ... + 76960.

It is an arithmetic number, because the mean of its divisors is an integer number (4754532).

Almost surely, 2^42177025 is an apocalyptic number.

It is an amenable number.

42177025 is a deficient number, since it is larger than the sum of its proper divisors (14877359).

42177025 is a wasteful number, since it uses less digits than its factorization.

42177025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153392 (or 153387 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 42177025 is about 6494.3841124467. The cubic root of 42177025 is about 348.0903479031.

Subtracting 42177025 from its reverse (52077124), we obtain a palindrome (9900099).

The spelling of 42177025 in words is "forty-two million, one hundred seventy-seven thousand, twenty-five".