125239257997 has 8 divisors (see below), whose sum is σ = 143132721152. Its totient is φ = 107346330000.

The previous prime is 125239257973. The next prime is 125239258003. The reversal of 125239257997 is 799752932521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125239257997 - 2¹⁹ = 125238733709 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 (125239257097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849247 + ... + 985747.

It is an arithmetic number, because the mean of its divisors is an integer number (17891590144).

Almost surely, 2^125239257997 is an apocalyptic number.

It is an amenable number.

125239257997 is a deficient number, since it is larger than the sum of its proper divisors (17893463155).

125239257997 is a wasteful number, since it uses less digits than its factorization.

125239257997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267579.

The product of its digits is 21432600, while the sum is 61.

The spelling of 125239257997 in words is "one hundred twenty-five billion, two hundred thirty-nine million, two hundred fifty-seven thousand, nine hundred ninety-seven".