125021082959 has 4 divisors (see below), whose sum is σ = 125022054000. Its totient is φ = 125020111920.

The previous prime is 125021082917. The next prime is 125021083037. The reversal of 125021082959 is 959280120521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 959280120521 = 23 ⋅41707831327.

It is a cyclic number.

It is not a de Polignac number, because 125021082959 - 2¹⁶ = 125021017423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125021081959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256334 + ... + 561915.

It is an arithmetic number, because the mean of its divisors is an integer number (31255513500).

Almost surely, 2^125021082959 is an apocalyptic number.

125021082959 is a deficient number, since it is larger than the sum of its proper divisors (971041).

125021082959 is an equidigital number, since it uses as much as digits as its factorization.

125021082959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971040.

The product of its (nonzero) digits is 129600, while the sum is 44.

The spelling of 125021082959 in words is "one hundred twenty-five billion, twenty-one million, eighty-two thousand, nine hundred fifty-nine".