42201025 has 6 divisors (see below), whose sum is σ = 52329302. Its totient is φ = 33760800.

The previous prime is 42201011. The next prime is 42201031. The reversal of 42201025 is 52010224.

It can be written as a sum of positive squares in 3 ways, for example, as 327184 + 41873841 = 572^2 + 6471^2 .

It is not a de Polignac number, because 42201025 - 2¹⁵ = 42168257 is a prime.

It is a super-2 number, since 2×42201025² = 3561853022101250, which contains 22 as substring.

It is a Duffinian 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, 843996 + ... + 844045.

Almost surely, 2^42201025 is an apocalyptic number.

It is an amenable number.

42201025 is a deficient number, since it is larger than the sum of its proper divisors (10128277).

42201025 is a wasteful number, since it uses less digits than its factorization.

42201025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688051 (or 1688046 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42201025 is about 6496.2315999355. The cubic root of 42201025 is about 348.1563600211.

Adding to 42201025 its reverse (52010224), we get a palindrome (94211249).

The spelling of 42201025 in words is "forty-two million, two hundred one thousand, twenty-five".