145525624021 has 2 divisors, whose sum is σ = 145525624022. Its totient is φ = 145525624020.

The previous prime is 145525624009. The next prime is 145525624061. The reversal of 145525624021 is 120426525541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108705387025 + 36820236996 = 329705^2 + 191886^2 .

It is a cyclic number.

It is not a de Polignac number, because 145525624021 - 2³⁷ = 8086670549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145525624061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72762812010 + 72762812011.

It is an arithmetic number, because the mean of its divisors is an integer number (72762812011).

Almost surely, 2^145525624021 is an apocalyptic number.

It is an amenable number.

145525624021 is a deficient number, since it is larger than the sum of its proper divisors (1).

145525624021 is an equidigital number, since it uses as much as digits as its factorization.

145525624021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 145525624021 in words is "one hundred forty-five billion, five hundred twenty-five million, six hundred twenty-four thousand, twenty-one".