1025145 has 48 divisors (see below), whose sum is σ = 2059200. Its totient is φ = 466560.

The previous prime is 1025137. The next prime is 1025147. The reversal of 1025145 is 5415201.

It is not a de Polignac number, because 1025145 - 2³ = 1025137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1025147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9351 + ... + 9459.

It is an arithmetic number, because the mean of its divisors is an integer number (42900).

2^1025145 is an apocalyptic number.

1025145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025145 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1025145 is a wasteful number, since it uses less digits than its factorization.

1025145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1025145 is about 1012.4944444292. The cubic root of 1025145 is about 100.8312379563.

It can be divided in two parts, 10251 and 45, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 1025145 in words is "one million, twenty-five thousand, one hundred forty-five".