2500123523 has 4 divisors (see below), whose sum is σ = 2500522560. Its totient is φ = 2499724488.

The previous prime is 2500123519. The next prime is 2500123541. The reversal of 2500123523 is 3253210052.

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

It is a cyclic number.

It is not a de Polignac number, because 2500123523 - 2² = 2500123519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500023523) 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, 189968 + ... + 202701.

It is an arithmetic number, because the mean of its divisors is an integer number (625130640).

Almost surely, 2^2500123523 is an apocalyptic number.

2500123523 is a deficient number, since it is larger than the sum of its proper divisors (399037).

2500123523 is an equidigital number, since it uses as much as digits as its factorization.

2500123523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399036.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2500123523 is about 50001.2352147424. The cubic root of 2500123523 is about 1357.2311607965.

Adding to 2500123523 its reverse (3253210052), we get a palindrome (5753333575).

The spelling of 2500123523 in words is "two billion, five hundred million, one hundred twenty-three thousand, five hundred twenty-three".