1225155151 has 4 divisors (see below), whose sum is σ = 1336532904. Its totient is φ = 1113777400.

The previous prime is 1225155121. The next prime is 1225155187. The reversal of 1225155151 is 1515515221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225155151 - 2¹⁷ = 1225024079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225155121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55688860 + ... + 55688881.

It is an arithmetic number, because the mean of its divisors is an integer number (334133226).

Almost surely, 2^1225155151 is an apocalyptic number.

1225155151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1225155151 is a deficient number, since it is larger than the sum of its proper divisors (111377753).

1225155151 is a wasteful number, since it uses less digits than its factorization.

1225155151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111377752.

The product of its digits is 2500, while the sum is 28.

The square root of 1225155151 is about 35002.2163726813. The cubic root of 1225155151 is about 1070.0326513459.

The spelling of 1225155151 in words is "one billion, two hundred twenty-five million, one hundred fifty-five thousand, one hundred fifty-one".