125224250549 has 2 divisors, whose sum is σ = 125224250550. Its totient is φ = 125224250548.

The previous prime is 125224250537. The next prime is 125224250621. The reversal of 125224250549 is 945052422521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88357562500 + 36866688049 = 297250^2 + 192007^2 .

It is a cyclic number.

It is not a de Polignac number, because 125224250549 - 2¹² = 125224246453 is a prime.

It is a super-2 number, since 2×125224250549² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125224250519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62612125274 + 62612125275.

It is an arithmetic number, because the mean of its divisors is an integer number (62612125275).

Almost surely, 2^125224250549 is an apocalyptic number.

It is an amenable number.

125224250549 is a deficient number, since it is larger than the sum of its proper divisors (1).

125224250549 is an equidigital number, since it uses as much as digits as its factorization.

125224250549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 125224250549 in words is "one hundred twenty-five billion, two hundred twenty-four million, two hundred fifty thousand, five hundred forty-nine".