1025155 has 4 divisors (see below), whose sum is σ = 1230192. Its totient is φ = 820120.

The previous prime is 1025153. The next prime is 1025161. The reversal of 1025155 is 5515201.

1025155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5515201 = 941 ⋅5861.

It is not a de Polignac number, because 1025155 - 2¹ = 1025153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025153) 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, 102511 + ... + 102520.

It is an arithmetic number, because the mean of its divisors is an integer number (307548).

2^1025155 is an apocalyptic number.

1025155 is a deficient number, since it is larger than the sum of its proper divisors (205037).

1025155 is an equidigital number, since it uses as much as digits as its factorization.

1025155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205036.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 1025155 is about 1012.4993827159. The cubic root of 1025155 is about 100.8315658153.

The spelling of 1025155 in words is "one million, twenty-five thousand, one hundred fifty-five".