1025610261 has 32 divisors (see below), whose sum is σ = 1514080512. Its totient is φ = 613616640.

The previous prime is 1025610251. The next prime is 1025610269. The reversal of 1025610261 is 1620165201.

It is not a de Polignac number, because 1025610261 - 2⁷ = 1025610133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025610269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231376 + ... + 235766.

It is an arithmetic number, because the mean of its divisors is an integer number (47315016).

Almost surely, 2^1025610261 is an apocalyptic number.

It is an amenable number.

1025610261 is a deficient number, since it is larger than the sum of its proper divisors (488470251).

1025610261 is a wasteful number, since it uses less digits than its factorization.

1025610261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1025610261 is about 32025.1504446115. The cubic root of 1025610261 is about 1008.4648970028.

Adding to 1025610261 its reverse (1620165201), we get a palindrome (2645775462).

The spelling of 1025610261 in words is "one billion, twenty-five million, six hundred ten thousand, two hundred sixty-one".