25677561500542 has 12 divisors (see below), whose sum is σ = 44804724659280. Its totient is φ = 11004669214476.

The previous prime is 25677561500527. The next prime is 25677561500543. The reversal of 25677561500542 is 24500516577652.

It is a super-2 number, since 2×25677561500542² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25677561500543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131007966742 + ... + 131007966937.

It is an arithmetic number, because the mean of its divisors is an integer number (3733727054940).

Almost surely, 2^{25677561500542} is an apocalyptic number.

25677561500542 is a deficient number, since it is larger than the sum of its proper divisors (19127163158738).

25677561500542 is a wasteful number, since it uses less digits than its factorization.

25677561500542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262015933695 (or 262015933688 counting only the distinct ones).

The product of its (nonzero) digits is 17640000, while the sum is 55.

The spelling of 25677561500542 in words is "twenty-five trillion, six hundred seventy-seven billion, five hundred sixty-one million, five hundred thousand, five hundred forty-two".