1225300551 has 16 divisors (see below), whose sum is σ = 1805048064. Its totient is φ = 735388544.

The previous prime is 1225300541. The next prime is 1225300577. The reversal of 1225300551 is 1550035221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1225300551 - 2⁶ = 1225300487 is a prime.

It is a super-2 number, since 2×1225300551² = 3002722880561807202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225300541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521121 + ... + 523466.

It is an arithmetic number, because the mean of its divisors is an integer number (112815504).

Almost surely, 2^1225300551 is an apocalyptic number.

1225300551 is a deficient number, since it is larger than the sum of its proper divisors (579747513).

1225300551 is a wasteful number, since it uses less digits than its factorization.

1225300551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044630.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1225300551 is about 35004.2933223912. The cubic root of 1225300551 is about 1070.0749797517.

Adding to 1225300551 its reverse (1550035221), we get a palindrome (2775335772).

The spelling of 1225300551 in words is "one billion, two hundred twenty-five million, three hundred thousand, five hundred fifty-one".