125355803 has 2 divisors, whose sum is σ = 125355804. Its totient is φ = 125355802.

The previous prime is 125355781. The next prime is 125355809. The reversal of 125355803 is 308553521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125355803 - 2¹⁶ = 125290267 is a prime.

It is a Chen prime.

It is equal to p_7129238 and since 125355803 and 7129238 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125355803.

It is not a weakly prime, because it can be changed into another prime (125355809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62677901 + 62677902.

It is an arithmetic number, because the mean of its divisors is an integer number (62677902).

Almost surely, 2^125355803 is an apocalyptic number.

125355803 is a deficient number, since it is larger than the sum of its proper divisors (1).

125355803 is an equidigital number, since it uses as much as digits as its factorization.

125355803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 125355803 is about 11196.2405744071. The cubic root of 125355803 is about 500.4739545921.

The spelling of 125355803 in words is "one hundred twenty-five million, three hundred fifty-five thousand, eight hundred three".