1225406613 has 16 divisors (see below), whose sum is σ = 1669982400. Its totient is φ = 799034880.

The previous prime is 1225406603. The next prime is 1225406621. The reversal of 1225406613 is 3166045221.

It is not a de Polignac number, because 1225406613 - 2⁶ = 1225406549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225406603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14053 + ... + 51461.

It is an arithmetic number, because the mean of its divisors is an integer number (104373900).

Almost surely, 2^1225406613 is an apocalyptic number.

It is an amenable number.

1225406613 is a deficient number, since it is larger than the sum of its proper divisors (444575787).

1225406613 is a wasteful number, since it uses less digits than its factorization.

1225406613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37652.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1225406613 is about 35005.8082751991. The cubic root of 1225406613 is about 1070.1058540864.

The spelling of 1225406613 in words is "one billion, two hundred twenty-five million, four hundred six thousand, six hundred thirteen".