25131768625151 has 4 divisors (see below), whose sum is σ = 25144315690872. Its totient is φ = 25119221559432.

The previous prime is 25131768625099. The next prime is 25131768625163. The reversal of 25131768625151 is 15152686713152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25131768625151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25131768625093 and 25131768625102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131768621151) 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, 6273529856 + ... + 6273533861.

It is an arithmetic number, because the mean of its divisors is an integer number (6286078922718).

Almost surely, 2^{25131768625151} is an apocalyptic number.

25131768625151 is a deficient number, since it is larger than the sum of its proper divisors (12547065721).

25131768625151 is a wasteful number, since it uses less digits than its factorization.

25131768625151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12547065720.

The product of its digits is 3024000, while the sum is 53.

The spelling of 25131768625151 in words is "twenty-five trillion, one hundred thirty-one billion, seven hundred sixty-eight million, six hundred twenty-five thousand, one hundred fifty-one".