145240251001 has 2 divisors, whose sum is σ = 145240251002. Its totient is φ = 145240251000.

The previous prime is 145240250999. The next prime is 145240251007. The reversal of 145240251001 is 100152042541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114125054976 + 31115196025 = 337824^2 + 176395^2 .

It is a cyclic number.

It is not a de Polignac number, because 145240251001 - 2¹ = 145240250999 is a prime.

Together with 145240250999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145240251007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72620125500 + 72620125501.

It is an arithmetic number, because the mean of its divisors is an integer number (72620125501).

Almost surely, 2^145240251001 is an apocalyptic number.

It is an amenable number.

145240251001 is a deficient number, since it is larger than the sum of its proper divisors (1).

145240251001 is an equidigital number, since it uses as much as digits as its factorization.

145240251001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 145240251001 its reverse (100152042541), we get a palindrome (245392293542).

The spelling of 145240251001 in words is "one hundred forty-five billion, two hundred forty million, two hundred fifty-one thousand, one".