25937161557 has 16 divisors (see below), whose sum is σ = 34745082240. Its totient is φ = 17210419200.

The previous prime is 25937161543. The next prime is 25937161567. The reversal of 25937161557 is 75516173952.

It is not a de Polignac number, because 25937161557 - 2⁴ = 25937161541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25937161507) 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 in 15 ways as a sum of consecutive naturals, for example, 1495944 + ... + 1513182.

It is an arithmetic number, because the mean of its divisors is an integer number (2171567640).

Almost surely, 2^25937161557 is an apocalyptic number.

It is an amenable number.

25937161557 is a deficient number, since it is larger than the sum of its proper divisors (8807920683).

25937161557 is a wasteful number, since it uses less digits than its factorization.

25937161557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19564.

The product of its digits is 1984500, while the sum is 51.

The spelling of 25937161557 in words is "twenty-five billion, nine hundred thirty-seven million, one hundred sixty-one thousand, five hundred fifty-seven".