125436612563 has 8 divisors (see below), whose sum is σ = 133898238720. Its totient is φ = 117160956360.

The previous prime is 125436612551. The next prime is 125436612577. The reversal of 125436612563 is 365216634521.

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 125436612563 - 2¹² = 125436608467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125436512563) 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, 46491095 + ... + 46493792.

It is an arithmetic number, because the mean of its divisors is an integer number (16737279840).

Almost surely, 2^125436612563 is an apocalyptic number.

125436612563 is a deficient number, since it is larger than the sum of its proper divisors (8461626157).

125436612563 is an equidigital number, since it uses as much as digits as its factorization.

125436612563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92984977.

The product of its digits is 777600, while the sum is 44.

The spelling of 125436612563 in words is "one hundred twenty-five billion, four hundred thirty-six million, six hundred twelve thousand, five hundred sixty-three".