425451521525213 has 8 divisors (see below), whose sum is σ = 427612263621048. Its totient is φ = 423290790436864.

The previous prime is 425451521525167. The next prime is 425451521525287. The reversal of 425451521525213 is 312525125154524.

It can be written as a sum of positive squares in 4 ways, for example, as 188778311874244 + 236673209650969 = 13739662^2 + 15384187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425451521525213 - 2¹⁰ = 425451521524189 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 (425451521545213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81239645 + ... + 86317917.

It is an arithmetic number, because the mean of its divisors is an integer number (53451532952631).

Almost surely, 2^{425451521525213} is an apocalyptic number.

It is an amenable number.

425451521525213 is a deficient number, since it is larger than the sum of its proper divisors (2160742095835).

425451521525213 is a wasteful number, since it uses less digits than its factorization.

425451521525213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503743.

The product of its digits is 2400000, while the sum is 47.

Adding to 425451521525213 its reverse (312525125154524), we get a palindrome (737976646679737).

The spelling of 425451521525213 in words is "four hundred twenty-five trillion, four hundred fifty-one billion, five hundred twenty-one million, five hundred twenty-five thousand, two hundred thirteen".