42750325 has 36 divisors (see below), whose sum is σ = 57825292. Its totient is φ = 31334400.

The previous prime is 42750319. The next prime is 42750329. The reversal of 42750325 is 52305724.

42750325 = T₃₉₀ + T₃₉₁ + ... + T₆₈₀.

It can be written as a sum of positive squares in 18 ways, for example, as 28665316 + 14085009 = 5354^2 + 3753^2 .

It is not a de Polignac number, because 42750325 - 2³ = 42750317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42750293 and 42750302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42750329) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 440677 + ... + 440773.

Almost surely, 2^42750325 is an apocalyptic number.

It is an amenable number.

42750325 is a deficient number, since it is larger than the sum of its proper divisors (15074967).

42750325 is a wasteful number, since it uses less digits than its factorization.

42750325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 42750325 is about 6538.3732686349. The cubic root of 42750325 is about 349.6604189336.

The spelling of 42750325 in words is "forty-two million, seven hundred fifty thousand, three hundred twenty-five".