125001245156 has 24 divisors (see below), whose sum is σ = 226362843000. Its totient is φ = 60327432704.

The previous prime is 125001245129. The next prime is 125001245203. The reversal of 125001245156 is 651542100521.

It can be written as a sum of positive squares in 4 ways, for example, as 14920622500 + 110080622656 = 122150^2 + 331784^2 .

It is a super-2 number, since 2×125001245156² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234140 + ... + 552108.

It is an arithmetic number, because the mean of its divisors is an integer number (9431785125).

Almost surely, 2^125001245156 is an apocalyptic number.

It is an amenable number.

125001245156 is a deficient number, since it is larger than the sum of its proper divisors (101361597844).

125001245156 is a wasteful number, since it uses less digits than its factorization.

125001245156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321391 (or 321389 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 125001245156 its reverse (651542100521), we get a palindrome (776543345677).

The spelling of 125001245156 in words is "one hundred twenty-five billion, one million, two hundred forty-five thousand, one hundred fifty-six".