1226250155 has 8 divisors (see below), whose sum is σ = 1584692592. Its totient is φ = 905538528.

The previous prime is 1226250133. The next prime is 1226250199. The reversal of 1226250155 is 5510526221.

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 1226250155 - 2²⁸ = 957814699 is a prime.

It is a super-3 number, since 3×1226250155³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian 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, 9432629 + ... + 9432758.

It is an arithmetic number, because the mean of its divisors is an integer number (198086574).

Almost surely, 2^1226250155 is an apocalyptic number.

1226250155 is a deficient number, since it is larger than the sum of its proper divisors (358442437).

1226250155 is a wasteful number, since it uses less digits than its factorization.

1226250155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18865405.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1226250155 is about 35017.8548029430. The cubic root of 1226250155 is about 1070.3513432636.

Adding to 1226250155 its reverse (5510526221), we get a palindrome (6736776376).

The spelling of 1226250155 in words is "one billion, two hundred twenty-six million, two hundred fifty thousand, one hundred fifty-five".