1225262051 has 16 divisors (see below), whose sum is σ = 1334128320. Its totient is φ = 1118530560.

The previous prime is 1225262047. The next prime is 1225262053. The reversal of 1225262051 is 1502625221.

It is a cyclic number.

It is not a de Polignac number, because 1225262051 - 2² = 1225262047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225262051.

It is not an unprimeable number, because it can be changed into a prime (1225262053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187906 + ... + 1188936.

It is an arithmetic number, because the mean of its divisors is an integer number (83383020).

Almost surely, 2^1225262051 is an apocalyptic number.

1225262051 is a deficient number, since it is larger than the sum of its proper divisors (108866269).

1225262051 is a wasteful number, since it uses less digits than its factorization.

1225262051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1225262051 is about 35003.7433855295. The cubic root of 1225262051 is about 1070.0637720747.

Adding to 1225262051 its reverse (1502625221), we get a palindrome (2727887272).

The spelling of 1225262051 in words is "one billion, two hundred twenty-five million, two hundred sixty-two thousand, fifty-one".