125354143505 has 8 divisors (see below), whose sum is σ = 150427589352. Its totient is φ = 100281570048.

The previous prime is 125354143489. The next prime is 125354143513. The reversal of 125354143505 is 505341453521.

It can be written as a sum of positive squares in 4 ways, for example, as 34371676816 + 90982466689 = 185396^2 + 301633^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 125354143505 - 2⁴ = 125354143489 is a prime.

It is a super-2 number, since 2×125354143505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156527 + ... + 524603.

It is an arithmetic number, because the mean of its divisors is an integer number (18803448669).

Almost surely, 2^125354143505 is an apocalyptic number.

It is an amenable number.

125354143505 is a deficient number, since it is larger than the sum of its proper divisors (25073445847).

125354143505 is an equidigital number, since it uses as much as digits as its factorization.

125354143505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436195.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 125354143505 in words is "one hundred twenty-five billion, three hundred fifty-four million, one hundred forty-three thousand, five hundred five".