25686792495 has 504 divisors, whose sum is σ = 62386726176. Its totient is φ = 10087773696.

The previous prime is 25686792487. The next prime is 25686792497. The reversal of 25686792495 is 59429768652.

25686792495 is a `hidden beast` number, since 2 + 56 + 8 + 6 + 7 + 92 + 495 = 666.

It is not a de Polignac number, because 25686792495 - 2³ = 25686792487 is a prime.

It is a super-2 number, since 2×25686792495² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25686792497) by changing a digit.

It is a polite number, since it can be written in 503 ways as a sum of consecutive naturals, for example, 694237617 + ... + 694237653.

Almost surely, 2^25686792495 is an apocalyptic number.

25686792495 is an abundant number, since it is smaller than the sum of its proper divisors (36699933681).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25686792495 is a wasteful number, since it uses less digits than its factorization.

25686792495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 88 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 25686792495 in words is "twenty-five billion, six hundred eighty-six million, seven hundred ninety-two thousand, four hundred ninety-five".