25161336462642 has 32 divisors (see below), whose sum is σ = 51047182359360. Its totient is φ = 8266518950400.

The previous prime is 25161336462631. The next prime is 25161336462649. The reversal of 25161336462642 is 24626463316152.

It is not an unprimeable number, because it can be changed into a prime (25161336462649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19159767 + ... + 20430842.

It is an arithmetic number, because the mean of its divisors is an integer number (1595224448730).

Almost surely, 2^{25161336462642} is an apocalyptic number.

25161336462642 is an abundant number, since it is smaller than the sum of its proper divisors (25885845896718).

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

25161336462642 is a wasteful number, since it uses less digits than its factorization.

25161336462642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39592138.

The product of its digits is 7464960, while the sum is 51.

Adding to 25161336462642 its reverse (24626463316152), we get a palindrome (49787799778794).

The spelling of 25161336462642 in words is "twenty-five trillion, one hundred sixty-one billion, three hundred thirty-six million, four hundred sixty-two thousand, six hundred forty-two".