351425245421 has 2 divisors, whose sum is σ = 351425245422. Its totient is φ = 351425245420.

The previous prime is 351425245373. The next prime is 351425245427. The reversal of 351425245421 is 124542524153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350144392900 + 1280852521 = 591730^2 + 35789^2 .

It is a cyclic number.

It is not a de Polignac number, because 351425245421 - 2²² = 351421051117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351425245427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175712622710 + 175712622711.

It is an arithmetic number, because the mean of its divisors is an integer number (175712622711).

Almost surely, 2^351425245421 is an apocalyptic number.

It is an amenable number.

351425245421 is a deficient number, since it is larger than the sum of its proper divisors (1).

351425245421 is an equidigital number, since it uses as much as digits as its factorization.

351425245421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192000, while the sum is 38.

Adding to 351425245421 its reverse (124542524153), we get a palindrome (475967769574).

The spelling of 351425245421 in words is "three hundred fifty-one billion, four hundred twenty-five million, two hundred forty-five thousand, four hundred twenty-one".