1025161111 has 4 divisors (see below), whose sum is σ = 1104019672. Its totient is φ = 946302552.

The previous prime is 1025161079. The next prime is 1025161127. The reversal of 1025161111 is 1111615201.

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

It is not a de Polignac number, because 1025161111 - 2⁵ = 1025161079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025161811) 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 3 ways as a sum of consecutive naturals, for example, 39429261 + ... + 39429286.

It is an arithmetic number, because the mean of its divisors is an integer number (276004918).

Almost surely, 2^1025161111 is an apocalyptic number.

1025161111 is a deficient number, since it is larger than the sum of its proper divisors (78858561).

1025161111 is an equidigital number, since it uses as much as digits as its factorization.

1025161111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78858560.

The product of its (nonzero) digits is 60, while the sum is 19.

The square root of 1025161111 is about 32018.1372193949. The cubic root of 1025161111 is about 1008.3176616891.

Adding to 1025161111 its reverse (1111615201), we get a palindrome (2136776312).

The spelling of 1025161111 in words is "one billion, twenty-five million, one hundred sixty-one thousand, one hundred eleven".