25614161542 has 4 divisors (see below), whose sum is σ = 38421242316. Its totient is φ = 12807080770.

The previous prime is 25614161539. The next prime is 25614161543. The reversal of 25614161542 is 24516141652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25614161543) by changing a digit.

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 as a sum of consecutive naturals, namely, 6403540384 + ... + 6403540387.

It is an arithmetic number, because the mean of its divisors is an integer number (9605310579).

Almost surely, 2^25614161542 is an apocalyptic number.

25614161542 is a deficient number, since it is larger than the sum of its proper divisors (12807080774).

25614161542 is a wasteful number, since it uses less digits than its factorization.

25614161542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12807080773.

The product of its digits is 57600, while the sum is 37.

The spelling of 25614161542 in words is "twenty-five billion, six hundred fourteen million, one hundred sixty-one thousand, five hundred forty-two".