25755506694 has 24 divisors (see below), whose sum is σ = 56297439432. Its totient is φ = 8509193280.

The previous prime is 25755506659. The next prime is 25755506701. The reversal of 25755506694 is 49660555752.

25755506694 is a `hidden beast` number, since 2 + 5 + 75 + 5 + 506 + 69 + 4 = 666.

It is a super-2 number, since 2×25755506694² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25755506694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6329212 + ... + 6333279.

It is an arithmetic number, because the mean of its divisors is an integer number (2345726643).

Almost surely, 2^25755506694 is an apocalyptic number.

25755506694 is an abundant number, since it is smaller than the sum of its proper divisors (30541932738).

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

25755506694 is a wasteful number, since it uses less digits than its factorization.

25755506694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12662612 (or 12662609 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 54.

The spelling of 25755506694 in words is "twenty-five billion, seven hundred fifty-five million, five hundred six thousand, six hundred ninety-four".