125519320523 has 4 divisors (see below), whose sum is σ = 125520524448. Its totient is φ = 125518116600.

The previous prime is 125519320489. The next prime is 125519320543. The reversal of 125519320523 is 325023915521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125519320523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125519320543) 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, 429011 + ... + 659612.

It is an arithmetic number, because the mean of its divisors is an integer number (31380131112).

Almost surely, 2^125519320523 is an apocalyptic number.

125519320523 is a deficient number, since it is larger than the sum of its proper divisors (1203925).

125519320523 is a wasteful number, since it uses less digits than its factorization.

125519320523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203924.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 125519320523 in words is "one hundred twenty-five billion, five hundred nineteen million, three hundred twenty thousand, five hundred twenty-three".