42444925 has 6 divisors (see below), whose sum is σ = 52631738. Its totient is φ = 33955920.

The previous prime is 42444889. The next prime is 42444931. The reversal of 42444925 is 52944424.

It can be written as a sum of positive squares in 3 ways, for example, as 168921 + 42276004 = 411^2 + 6502^2 .

It is not a de Polignac number, because 42444925 - 2¹³ = 42436733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 848874 + ... + 848923.

Almost surely, 2^42444925 is an apocalyptic number.

It is an amenable number.

42444925 is a deficient number, since it is larger than the sum of its proper divisors (10186813).

42444925 is a wasteful number, since it uses less digits than its factorization.

42444925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697807 (or 1697802 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 42444925 is about 6514.9769761681. The cubic root of 42444925 is about 348.8257929761.

The spelling of 42444925 in words is "forty-two million, four hundred forty-four thousand, nine hundred twenty-five".