25203512323 has 4 divisors (see below), whose sum is σ = 27494740728. Its totient is φ = 22912283920.

The previous prime is 25203512303. The next prime is 25203512329. The reversal of 25203512323 is 32321530252.

It is a happy number.

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 25203512323 - 2²⁹ = 24666641411 is a prime.

It is a super-2 number, since 2×25203512323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25203512291 and 25203512300.

It is not an unprimeable number, because it can be changed into a prime (25203512329) 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, 1145614186 + ... + 1145614207.

It is an arithmetic number, because the mean of its divisors is an integer number (6873685182).

Almost surely, 2^25203512323 is an apocalyptic number.

25203512323 is a deficient number, since it is larger than the sum of its proper divisors (2291228405).

25203512323 is a wasteful number, since it uses less digits than its factorization.

25203512323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291228404.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 25203512323 in words is "twenty-five billion, two hundred three million, five hundred twelve thousand, three hundred twenty-three".