1025742163 has 4 divisors (see below), whose sum is σ = 1035898128. Its totient is φ = 1015586200.

The previous prime is 1025742131. The next prime is 1025742169. The reversal of 1025742163 is 3612475201.

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

It is a cyclic number.

It is not a de Polignac number, because 1025742163 - 2⁵ = 1025742131 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025742169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5077831 + ... + 5078032.

It is an arithmetic number, because the mean of its divisors is an integer number (258974532).

Almost surely, 2^1025742163 is an apocalyptic number.

1025742163 is a deficient number, since it is larger than the sum of its proper divisors (10155965).

1025742163 is a wasteful number, since it uses less digits than its factorization.

1025742163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10155964.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1025742163 is about 32027.2097286042. The cubic root of 1025742163 is about 1008.5081274708.

The spelling of 1025742163 in words is "one billion, twenty-five million, seven hundred forty-two thousand, one hundred sixty-three".