425021212537 has 2 divisors, whose sum is σ = 425021212538. Its totient is φ = 425021212536.

The previous prime is 425021212513. The next prime is 425021212601. The reversal of 425021212537 is 735212120524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395929134441 + 29092078096 = 629229^2 + 170564^2 .

It is a cyclic number.

It is not a de Polignac number, because 425021212537 - 2³¹ = 422873728889 is a prime.

It is a super-2 number, since 2×425021212537² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (425021212037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212510606268 + 212510606269.

It is an arithmetic number, because the mean of its divisors is an integer number (212510606269).

Almost surely, 2^425021212537 is an apocalyptic number.

It is an amenable number.

425021212537 is a deficient number, since it is larger than the sum of its proper divisors (1).

425021212537 is an equidigital number, since it uses as much as digits as its factorization.

425021212537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 425021212537 in words is "four hundred twenty-five billion, twenty-one million, two hundred twelve thousand, five hundred thirty-seven".