125997954253526 has 4 divisors (see below), whose sum is σ = 188996931380292. Its totient is φ = 62998977126762.

The previous prime is 125997954253499. The next prime is 125997954253537. The reversal of 125997954253526 is 625352459799521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31499488563380 + ... + 31499488563383.

It is an arithmetic number, because the mean of its divisors is an integer number (47249232845073).

Almost surely, 2^{125997954253526} is an apocalyptic number.

125997954253526 is a deficient number, since it is larger than the sum of its proper divisors (62998977126766).

125997954253526 is an equidigital number, since it uses as much as digits as its factorization.

125997954253526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62998977126765.

The product of its digits is 1837080000, while the sum is 74.

The spelling of 125997954253526 in words is "one hundred twenty-five trillion, nine hundred ninety-seven billion, nine hundred fifty-four million, two hundred fifty-three thousand, five hundred twenty-six".