25730161115 has 32 divisors (see below), whose sum is σ = 32364334080. Its totient is φ = 19612601344.

The previous prime is 25730161109. The next prime is 25730161123. The reversal of 25730161115 is 51116103752.

It is a cyclic number.

It is not a de Polignac number, because 25730161115 - 2²² = 25725966811 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3432902 + ... + 3440388.

It is an arithmetic number, because the mean of its divisors is an integer number (1011385440).

Almost surely, 2^25730161115 is an apocalyptic number.

25730161115 is a deficient number, since it is larger than the sum of its proper divisors (6634172965).

25730161115 is a wasteful number, since it uses less digits than its factorization.

25730161115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7831.

The product of its (nonzero) digits is 6300, while the sum is 32.

Adding to 25730161115 its reverse (51116103752), we get a palindrome (76846264867).

The spelling of 25730161115 in words is "twenty-five billion, seven hundred thirty million, one hundred sixty-one thousand, one hundred fifteen".