251212426373 has 2 divisors, whose sum is σ = 251212426374. Its totient is φ = 251212426372.

The previous prime is 251212426363. The next prime is 251212426397. The reversal of 251212426373 is 373624212152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202714256644 + 48498169729 = 450238^2 + 220223^2 .

It is a cyclic number.

It is not a de Polignac number, because 251212426373 - 2⁴ = 251212426357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251212426363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125606213186 + 125606213187.

It is an arithmetic number, because the mean of its divisors is an integer number (125606213187).

Almost surely, 2^251212426373 is an apocalyptic number.

It is an amenable number.

251212426373 is a deficient number, since it is larger than the sum of its proper divisors (1).

251212426373 is an equidigital number, since it uses as much as digits as its factorization.

251212426373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The spelling of 251212426373 in words is "two hundred fifty-one billion, two hundred twelve million, four hundred twenty-six thousand, three hundred seventy-three".