1025640022 has 32 divisors (see below), whose sum is σ = 1834389504. Its totient is φ = 424617600.

The previous prime is 1025640017. The next prime is 1025640041. The reversal of 1025640022 is 2200465201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1025639975 and 1025640002.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32638 + ... + 55825.

It is an arithmetic number, because the mean of its divisors is an integer number (57324672).

Almost surely, 2^1025640022 is an apocalyptic number.

1025640022 is a deficient number, since it is larger than the sum of its proper divisors (808749482).

1025640022 is a wasteful number, since it uses less digits than its factorization.

1025640022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88524.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1025640022 is about 32025.6150916731. The cubic root of 1025640022 is about 1008.4746514013.

The spelling of 1025640022 in words is "one billion, twenty-five million, six hundred forty thousand, twenty-two".