1025222550 has 48 divisors (see below), whose sum is σ = 2773697472. Its totient is φ = 248538400.

The previous prime is 1025222531. The next prime is 1025222581. The reversal of 1025222550 is 552225201.

It is a self number, because there is not a number n which added to its sum of digits gives 1025222550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309024 + ... + 312323.

It is an arithmetic number, because the mean of its divisors is an integer number (57785364).

Almost surely, 2^1025222550 is an apocalyptic number.

1025222550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1025222550 is an abundant number, since it is smaller than the sum of its proper divisors (1748474922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025222550 is a wasteful number, since it uses less digits than its factorization.

1025222550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621373 (or 621368 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 1025222550 is about 32019.0966455957. The cubic root of 1025222550 is about 1008.3378044714.

Adding to 1025222550 its reverse (552225201), we get a palindrome (1577447751).

The spelling of 1025222550 in words is "one billion, twenty-five million, two hundred twenty-two thousand, five hundred fifty".