125315503 has 2 divisors, whose sum is σ = 125315504. Its totient is φ = 125315502.

The previous prime is 125315473. The next prime is 125315521. The reversal of 125315503 is 305513521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125315503 - 2²¹ = 123218351 is a prime.

It is equal to p_7127071 and since 125315503 and 7127071 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125315543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62657751 + 62657752.

It is an arithmetic number, because the mean of its divisors is an integer number (62657752).

Almost surely, 2^125315503 is an apocalyptic number.

125315503 is a deficient number, since it is larger than the sum of its proper divisors (1).

125315503 is an equidigital number, since it uses as much as digits as its factorization.

125315503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 125315503 is about 11194.4407184995. The cubic root of 125315503 is about 500.4203172345.

The spelling of 125315503 in words is "one hundred twenty-five million, three hundred fifteen thousand, five hundred three".