1025726585 has 16 divisors (see below), whose sum is σ = 1326729936. Its totient is φ = 756787968.

The previous prime is 1025726567. The next prime is 1025726587. The reversal of 1025726585 is 5856275201.

It can be written as a sum of positive squares in 8 ways, for example, as 8690704 + 1017035881 = 2948^2 + 31891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025726585 - 2⁶ = 1025726521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1025726587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74027 + ... + 86783.

It is an arithmetic number, because the mean of its divisors is an integer number (82920621).

Almost surely, 2^1025726585 is an apocalyptic number.

It is an amenable number.

1025726585 is a deficient number, since it is larger than the sum of its proper divisors (301003351).

1025726585 is a wasteful number, since it uses less digits than its factorization.

1025726585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14012.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 1025726585 is about 32026.9665282243. The cubic root of 1025726585 is about 1008.5030220231.

The spelling of 1025726585 in words is "one billion, twenty-five million, seven hundred twenty-six thousand, five hundred eighty-five".