42657825 has 48 divisors (see below), whose sum is σ = 81213056. Its totient is φ = 19353600.

The previous prime is 42657817. The next prime is 42657833. The reversal of 42657825 is 52875624.

It is an interprime number because it is at equal distance from previous prime (42657817) and next prime (42657833).

It is not a de Polignac number, because 42657825 - 2³ = 42657817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101115 + ... + 101535.

Almost surely, 2^42657825 is an apocalyptic number.

It is an amenable number.

42657825 is a deficient number, since it is larger than the sum of its proper divisors (38555231).

42657825 is a wasteful number, since it uses less digits than its factorization.

42657825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 629 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 42657825 is about 6531.2958132365. The cubic root of 42657825 is about 349.4080470168.

It can be divided in two parts, 4265 and 7825, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 42657825 in words is "forty-two million, six hundred fifty-seven thousand, eight hundred twenty-five".