25785878151 has 96 divisors (see below), whose sum is σ = 41341353984. Its totient is φ = 14240635200.

The previous prime is 25785878143. The next prime is 25785878161. The reversal of 25785878151 is 15187858752.

It is not a de Polignac number, because 25785878151 - 2³ = 25785878143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25785878091 and 25785878100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25785878141) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17340130 + ... + 17341616.

It is an arithmetic number, because the mean of its divisors is an integer number (430639104).

Almost surely, 2^25785878151 is an apocalyptic number.

25785878151 is a deficient number, since it is larger than the sum of its proper divisors (15555475833).

25785878151 is a wasteful number, since it uses less digits than its factorization.

25785878151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633 (or 1622 counting only the distinct ones).

The product of its digits is 6272000, while the sum is 57.

The spelling of 25785878151 in words is "twenty-five billion, seven hundred eighty-five million, eight hundred seventy-eight thousand, one hundred fifty-one".