25016540039 has 4 divisors (see below), whose sum is σ = 25033365024. Its totient is φ = 24999715056.

The previous prime is 25016539997. The next prime is 25016540041. The reversal of 25016540039 is 93004561052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25016540039 - 2⁸ = 25016539783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25016539990 and 25016540008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25016540089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8410262 + ... + 8413235.

It is an arithmetic number, because the mean of its divisors is an integer number (6258341256).

Almost surely, 2^25016540039 is an apocalyptic number.

25016540039 is a deficient number, since it is larger than the sum of its proper divisors (16824985).

25016540039 is a wasteful number, since it uses less digits than its factorization.

25016540039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16824984.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 25016540039 in words is "twenty-five billion, sixteen million, five hundred forty thousand, thirty-nine".