125251161365 has 24 divisors (see below), whose sum is σ = 165544180704. Its totient is φ = 90906015200.

The previous prime is 125251161331. The next prime is 125251161367. The reversal of 125251161365 is 563161152521.

It is not a de Polignac number, because 125251161365 - 2²⁶ = 125184052501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125251161367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86234 + ... + 507876.

It is an arithmetic number, because the mean of its divisors is an integer number (6897674196).

Almost surely, 2^125251161365 is an apocalyptic number.

It is an amenable number.

125251161365 is a deficient number, since it is larger than the sum of its proper divisors (40293019339).

125251161365 is a wasteful number, since it uses less digits than its factorization.

125251161365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422161 (or 422150 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The spelling of 125251161365 in words is "one hundred twenty-five billion, two hundred fifty-one million, one hundred sixty-one thousand, three hundred sixty-five".