1225653413 has 4 divisors (see below), whose sum is σ = 1225826208. Its totient is φ = 1225480620.

The previous prime is 1225653409. The next prime is 1225653431. The reversal of 1225653413 is 3143565221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3143565221 = 45631 ⋅68891.

It is a cyclic number.

It is not a de Polignac number, because 1225653413 - 2² = 1225653409 is a prime.

It is a super-3 number, since 3×1225653413³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225653413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225683413) 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, 75281 + ... + 90102.

It is an arithmetic number, because the mean of its divisors is an integer number (306456552).

Almost surely, 2^1225653413 is an apocalyptic number.

It is an amenable number.

1225653413 is a deficient number, since it is larger than the sum of its proper divisors (172795).

1225653413 is an equidigital number, since it uses as much as digits as its factorization.

1225653413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172794.

The product of its digits is 21600, while the sum is 32.

The square root of 1225653413 is about 35009.3332270125. Note that the first 3 decimals coincide. The cubic root of 1225653413 is about 1070.1776899417.

The spelling of 1225653413 in words is "one billion, two hundred twenty-five million, six hundred fifty-three thousand, four hundred thirteen".