1025525805 has 8 divisors (see below), whose sum is σ = 1640841312. Its totient is φ = 546947088.

The previous prime is 1025525801. The next prime is 1025525873. The reversal of 1025525805 is 5085255201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025525805 - 2² = 1025525801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025525801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34184179 + ... + 34184208.

It is an arithmetic number, because the mean of its divisors is an integer number (205105164).

Almost surely, 2^1025525805 is an apocalyptic number.

1025525805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025525805 is a deficient number, since it is larger than the sum of its proper divisors (615315507).

1025525805 is an equidigital number, since it uses as much as digits as its factorization.

1025525805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68368395.

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 1025525805 is about 32023.8318288115. The cubic root of 1025525805 is about 1008.4372148664.

The spelling of 1025525805 in words is "one billion, twenty-five million, five hundred twenty-five thousand, eight hundred five".