1225354251005 has 4 divisors (see below), whose sum is σ = 1470425101212. Its totient is φ = 980283400800.

The previous prime is 1225354250999. The next prime is 1225354251013. The reversal of 1225354251005 is 5001524535221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182037048964 + 1043317202041 = 426658^2 + 1021429^2 .

It is not a de Polignac number, because 1225354251005 - 2⁸ = 1225354250749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122535425096 + ... + 122535425105.

It is an arithmetic number, because the mean of its divisors is an integer number (367606275303).

Almost surely, 2^{1225354251005} is an apocalyptic number.

It is an amenable number.

1225354251005 is a deficient number, since it is larger than the sum of its proper divisors (245070850207).

1225354251005 is an equidigital number, since it uses as much as digits as its factorization.

1225354251005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245070850206.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 1225354251005 its reverse (5001524535221), we get a palindrome (6226878786226).

The spelling of 1225354251005 in words is "one trillion, two hundred twenty-five billion, three hundred fifty-four million, two hundred fifty-one thousand, five".