1225154215 has 8 divisors (see below), whose sum is σ = 1556666640. Its totient is φ = 922468992.

The previous prime is 1225154207. The next prime is 1225154221. The reversal of 1225154215 is 5124515221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1225154215 - 2³ = 1225154207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7206705 + ... + 7206874.

It is an arithmetic number, because the mean of its divisors is an integer number (194583330).

Almost surely, 2^1225154215 is an apocalyptic number.

1225154215 is a deficient number, since it is larger than the sum of its proper divisors (331512425).

1225154215 is a wasteful number, since it uses less digits than its factorization.

1225154215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14413601.

The product of its digits is 4000, while the sum is 28.

The square root of 1225154215 is about 35002.2030020969. The cubic root of 1225154215 is about 1070.0323788496.

Adding to 1225154215 its reverse (5124515221), we get a palindrome (6349669436).

It can be divided in two parts, 12251 and 54215, that added together give a palindrome (66466).

The spelling of 1225154215 in words is "one billion, two hundred twenty-five million, one hundred fifty-four thousand, two hundred fifteen".