1225151413 has 4 divisors (see below), whose sum is σ = 1225225260. Its totient is φ = 1225077568.

The previous prime is 1225151401. The next prime is 1225151441. The reversal of 1225151413 is 3141515221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 479697604 + 745453809 = 21902^2 + 27303^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225151413 - 2¹³ = 1225143221 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 (1225151813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831 + ... + 49507.

It is an arithmetic number, because the mean of its divisors is an integer number (306306315).

Almost surely, 2^1225151413 is an apocalyptic number.

It is an amenable number.

1225151413 is a deficient number, since it is larger than the sum of its proper divisors (73847).

1225151413 is an equidigital number, since it uses as much as digits as its factorization.

1225151413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73846.

The product of its digits is 1200, while the sum is 25.

The square root of 1225151413 is about 35002.1629760219. The cubic root of 1225151413 is about 1070.0315631066.

Adding to 1225151413 its reverse (3141515221), we get a palindrome (4366666634).

The spelling of 1225151413 in words is "one billion, two hundred twenty-five million, one hundred fifty-one thousand, four hundred thirteen".