145525069 has 2 divisors, whose sum is σ = 145525070. Its totient is φ = 145525068.

The previous prime is 145525007. The next prime is 145525087. The reversal of 145525069 is 960525541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140707044 + 4818025 = 11862^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 145525069 - 2²⁵ = 111970637 is a prime.

It is a super-2 number, since 2×145525069² = 42355091414909522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145525169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72762534 + 72762535.

It is an arithmetic number, because the mean of its divisors is an integer number (72762535).

Almost surely, 2^145525069 is an apocalyptic number.

It is an amenable number.

145525069 is a deficient number, since it is larger than the sum of its proper divisors (1).

145525069 is an equidigital number, since it uses as much as digits as its factorization.

145525069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 145525069 is about 12063.3771805411. The cubic root of 145525069 is about 525.9921603886.

The spelling of 145525069 in words is "one hundred forty-five million, five hundred twenty-five thousand, sixty-nine".