125402051 has 2 divisors, whose sum is σ = 125402052. Its totient is φ = 125402050.

The previous prime is 125402029. The next prime is 125402077. The reversal of 125402051 is 150204521.

It is a weak prime.

It is an emirp because it is prime and its reverse (150204521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125402051 - 2⁶ = 125401987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125402021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62701025 + 62701026.

It is an arithmetic number, because the mean of its divisors is an integer number (62701026).

Almost surely, 2^125402051 is an apocalyptic number.

125402051 is a deficient number, since it is larger than the sum of its proper divisors (1).

125402051 is an equidigital number, since it uses as much as digits as its factorization.

125402051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 125402051 is about 11198.3057200632. The cubic root of 125402051 is about 500.5354942870.

Adding to 125402051 its reverse (150204521), we get a palindrome (275606572).

The spelling of 125402051 in words is "one hundred twenty-five million, four hundred two thousand, fifty-one".