43149025 has 6 divisors (see below), whose sum is σ = 53504822. Its totient is φ = 34519200.

The previous prime is 43149017. The next prime is 43149053. The reversal of 43149025 is 52094134.

It can be written as a sum of positive squares in 3 ways, for example, as 5987809 + 37161216 = 2447^2 + 6096^2 .

It is not a de Polignac number, because 43149025 - 2³ = 43149017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43148984 and 43149002.

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, 862956 + ... + 863005.

Almost surely, 2^43149025 is an apocalyptic number.

It is an amenable number.

43149025 is a deficient number, since it is larger than the sum of its proper divisors (10355797).

43149025 is a wasteful number, since it uses less digits than its factorization.

43149025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725971 (or 1725966 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 43149025 is about 6568.7917458236. The cubic root of 43149025 is about 350.7440633369.

The spelling of 43149025 in words is "forty-three million, one hundred forty-nine thousand, twenty-five".