1232425145551 has 4 divisors (see below), whose sum is σ = 1253313707400. Its totient is φ = 1211536583704.

The previous prime is 1232425145503. The next prime is 1232425145557. The reversal of 1232425145551 is 1555415242321.

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

It is a cyclic number.

It is not a de Polignac number, because 1232425145551 - 2²¹ = 1232423048399 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 (1232425145557) 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, 10444280836 + ... + 10444280953.

It is an arithmetic number, because the mean of its divisors is an integer number (313328426850).

Almost surely, 2^{1232425145551} is an apocalyptic number.

1232425145551 is a deficient number, since it is larger than the sum of its proper divisors (20888561849).

1232425145551 is an equidigital number, since it uses as much as digits as its factorization.

1232425145551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20888561848.

The product of its digits is 240000, while the sum is 40.

The spelling of 1232425145551 in words is "one trillion, two hundred thirty-two billion, four hundred twenty-five million, one hundred forty-five thousand, five hundred fifty-one".