1020256252 has 24 divisors (see below), whose sum is σ = 1865267712. Its totient is φ = 487719600.

The previous prime is 1020256219. The next prime is 1020256253. The reversal of 1020256252 is 2526520201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020256253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39274 + ... + 59857.

It is an arithmetic number, because the mean of its divisors is an integer number (77719488).

Almost surely, 2^1020256252 is an apocalyptic number.

It is an amenable number.

1020256252 is a deficient number, since it is larger than the sum of its proper divisors (845011460).

1020256252 is a wasteful number, since it uses less digits than its factorization.

1020256252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99249 (or 99247 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1020256252 is about 31941.4503740829. The cubic root of 1020256252 is about 1006.7069995877.

Adding to 1020256252 its reverse (2526520201), we get a palindrome (3546776453).

The spelling of 1020256252 in words is "one billion, twenty million, two hundred fifty-six thousand, two hundred fifty-two".