42377525 has 12 divisors (see below), whose sum is σ = 52935972. Its totient is φ = 33651840.

The previous prime is 42377521. The next prime is 42377551. The reversal of 42377525 is 52577324.

It can be written as a sum of positive squares in 6 ways, for example, as 361201 + 42016324 = 601^2 + 6482^2 .

It is not a de Polignac number, because 42377525 - 2² = 42377521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42377521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2762 + ... + 9611.

It is an arithmetic number, because the mean of its divisors is an integer number (4411331).

Almost surely, 2^42377525 is an apocalyptic number.

It is an amenable number.

42377525 is a deficient number, since it is larger than the sum of its proper divisors (10558447).

42377525 is a wasteful number, since it uses less digits than its factorization.

42377525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12520 (or 12515 counting only the distinct ones).

The product of its digits is 58800, while the sum is 35.

The square root of 42377525 is about 6509.8022243383. The cubic root of 42377525 is about 348.6410569992.

The spelling of 42377525 in words is "forty-two million, three hundred seventy-seven thousand, five hundred twenty-five".