25139012777497 has 8 divisors (see below), whose sum is σ = 25142569929216. Its totient is φ = 25135455850752.

The previous prime is 25139012777491. The next prime is 25139012777533. The reversal of 25139012777497 is 79477721093152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25139012777497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25139012777491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413869113 + ... + 413929849.

It is an arithmetic number, because the mean of its divisors is an integer number (3142821241152).

Almost surely, 2^{25139012777497} is an apocalyptic number.

It is an amenable number.

25139012777497 is a deficient number, since it is larger than the sum of its proper divisors (3557151719).

25139012777497 is an equidigital number, since it uses as much as digits as its factorization.

25139012777497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112487.

The product of its (nonzero) digits is 46675440, while the sum is 64.

The spelling of 25139012777497 in words is "twenty-five trillion, one hundred thirty-nine billion, twelve million, seven hundred seventy-seven thousand, four hundred ninety-seven".