1225400151 has 8 divisors (see below), whose sum is σ = 1678025584. Its totient is φ = 794854080.

The previous prime is 1225400123. The next prime is 1225400153. The reversal of 1225400151 is 1510045221.

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

It is a de Polignac number, because none of the positive numbers 2^k-1225400151 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 (1225400153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5519710 + ... + 5519931.

It is an arithmetic number, because the mean of its divisors is an integer number (209753198).

Almost surely, 2^1225400151 is an apocalyptic number.

1225400151 is a deficient number, since it is larger than the sum of its proper divisors (452625433).

1225400151 is a wasteful number, since it uses less digits than its factorization.

1225400151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039681.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1225400151 is about 35005.7159761088. The cubic root of 1225400151 is about 1070.1039730682.

Adding to 1225400151 its reverse (1510045221), we get a palindrome (2735445372).

The spelling of 1225400151 in words is "one billion, two hundred twenty-five million, four hundred thousand, one hundred fifty-one".