1018020825 has 72 divisors (see below), whose sum is σ = 1955673440. Its totient is φ = 519156000.

The previous prime is 1018020821. The next prime is 1018020859. The reversal of 1018020825 is 5280208101.

1018020825 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1018020825 - 2² = 1018020821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1018020821) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 355650 + ... + 358500.

Almost surely, 2^1018020825 is an apocalyptic number.

1018020825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1018020825 is a deficient number, since it is larger than the sum of its proper divisors (937652615).

1018020825 is a wasteful number, since it uses less digits than its factorization.

1018020825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2882 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1018020825 is about 31906.4386135463. The cubic root of 1018020825 is about 1005.9712152860.

Adding to 1018020825 its reverse (5280208101), we get a palindrome (6298228926).

The spelling of 1018020825 in words is "one billion, eighteen million, twenty thousand, eight hundred twenty-five".