54040025 has 24 divisors (see below), whose sum is σ = 76416984. Its totient is φ = 37555200.

The previous prime is 54040013. The next prime is 54040039. The reversal of 54040025 is 52004045.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 18088009 + 35952016 = 4253^2 + 5996^2 .

It is not a de Polignac number, because 54040025 - 2¹² = 54035929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54039979 and 54040006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635 + ... + 10415.

It is an arithmetic number, because the mean of its divisors is an integer number (3184041).

Almost surely, 2^54040025 is an apocalyptic number.

It is an amenable number.

54040025 is a deficient number, since it is larger than the sum of its proper divisors (22376959).

54040025 is a wasteful number, since it uses less digits than its factorization.

54040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9821 (or 9816 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 54040025 is about 7351.1920802003. The cubic root of 54040025 is about 378.0696777202.

The spelling of 54040025 in words is "fifty-four million, forty thousand, twenty-five".