125485421 has 2 divisors, whose sum is σ = 125485422. Its totient is φ = 125485420.

The previous prime is 125485351. The next prime is 125485429. The reversal of 125485421 is 124584521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88153321 + 37332100 = 9389^2 + 6110^2 .

It is a cyclic number.

It is not a de Polignac number, because 125485421 - 2²⁶ = 58376557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125485429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62742710 + 62742711.

It is an arithmetic number, because the mean of its divisors is an integer number (62742711).

Almost surely, 2^125485421 is an apocalyptic number.

It is an amenable number.

125485421 is a deficient number, since it is larger than the sum of its proper divisors (1).

125485421 is an equidigital number, since it uses as much as digits as its factorization.

125485421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 32.

The square root of 125485421 is about 11202.0275396912. The cubic root of 125485421 is about 500.6463919947.

The spelling of 125485421 in words is "one hundred twenty-five million, four hundred eighty-five thousand, four hundred twenty-one".