1222355025 has 108 divisors (see below), whose sum is σ = 2349207900. Its totient is φ = 607392000.

The previous prime is 1222355011. The next prime is 1222355081. The reversal of 1222355025 is 5205532221.

1222355025 is a `hidden beast` number, since 122 + 2 + 35 + 502 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5461569 + 1216893456 = 2337^2 + 34884^2 .

It is not a de Polignac number, because 1222355025 - 2⁴ = 1222355009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222355025.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 8203651 + ... + 8203799.

It is an arithmetic number, because the mean of its divisors is an integer number (21751925).

Almost surely, 2^1222355025 is an apocalyptic number.

1222355025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222355025 is a deficient number, since it is larger than the sum of its proper divisors (1126852875).

1222355025 is a wasteful number, since it uses less digits than its factorization.

1222355025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1222355025 is about 34962.1942246193. The cubic root of 1222355025 is about 1069.2168330933.

Adding to 1222355025 its reverse (5205532221), we get a palindrome (6427887246).

It can be divided in two parts, 122235 and 5025, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 1222355025 in words is "one billion, two hundred twenty-two million, three hundred fifty-five thousand, twenty-five".