125029997 has 2 divisors, whose sum is σ = 125029998. Its totient is φ = 125029996.

The previous prime is 125029987. The next prime is 125030039. The reversal of 125029997 is 799920521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63266116 + 61763881 = 7954^2 + 7859^2 .

It is a cyclic number.

It is not a de Polignac number, because 125029997 - 2⁴ = 125029981 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125029907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62514998 + 62514999.

It is an arithmetic number, because the mean of its divisors is an integer number (62514999).

Almost surely, 2^125029997 is an apocalyptic number.

It is an amenable number.

125029997 is a deficient number, since it is larger than the sum of its proper divisors (1).

125029997 is an equidigital number, since it uses as much as digits as its factorization.

125029997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 125029997 is about 11181.6813136487. The cubic root of 125029997 is about 500.0399928011.

The spelling of 125029997 in words is "one hundred twenty-five million, twenty-nine thousand, nine hundred ninety-seven".