125001145 has 16 divisors (see below), whose sum is σ = 156307968. Its totient is φ = 95857920.

The previous prime is 125001143. The next prime is 125001181. The reversal of 125001145 is 541100521.

It is not a de Polignac number, because 125001145 - 2¹ = 125001143 is a prime.

It is a super-2 number, since 2×125001145² = 31250572502622050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125001143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12817 + ... + 20353.

It is an arithmetic number, because the mean of its divisors is an integer number (9769248).

Almost surely, 2^125001145 is an apocalyptic number.

It is an amenable number.

125001145 is a deficient number, since it is larger than the sum of its proper divisors (31306823).

125001145 is a wasteful number, since it uses less digits than its factorization.

125001145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 125001145 is about 11180.3910933384. The cubic root of 125001145 is about 500.0015266620.

Adding to 125001145 its reverse (541100521), we get a palindrome (666101666).

The spelling of 125001145 in words is "one hundred twenty-five million, one thousand, one hundred forty-five".