25039999999999 has 4 divisors (see below), whose sum is σ = 25464406779720. Its totient is φ = 24615593220280.

The previous prime is 25039999999991. The next prime is 25040000000011. The reversal of 25039999999999 is 99999999993052.

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 25039999999999 - 2³ = 25039999999991 is a prime.

It is a super-9 number, since 9×25039999999999⁹ (a number of 122 digits) contains 999999999 as substring.

It is a Duffinian number.

25039999999999 is a modest number, since divided by 9999999 gives 2503999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25039999999991) 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, 212203389772 + ... + 212203389889.

It is an arithmetic number, because the mean of its divisors is an integer number (6366101694930).

Almost surely, 2^{25039999999999} is an apocalyptic number.

25039999999999 is a deficient number, since it is larger than the sum of its proper divisors (424406779721).

25039999999999 is an equidigital number, since it uses as much as digits as its factorization.

25039999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424406779720.

The product of its (nonzero) digits is 104603532030, while the sum is 100.

The spelling of 25039999999999 in words is "twenty-five trillion, thirty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".