25126523 has 4 divisors (see below), whose sum is σ = 25937088. Its totient is φ = 24315960.

The previous prime is 25126457. The next prime is 25126537. The reversal of 25126523 is 32562152.

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-25126523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25126492 and 25126501.

It is not an unprimeable number, because it can be changed into a prime (25126553) 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, 405236 + ... + 405297.

It is an arithmetic number, because the mean of its divisors is an integer number (6484272).

Almost surely, 2^25126523 is an apocalyptic number.

25126523 is a deficient number, since it is larger than the sum of its proper divisors (810565).

25126523 is an equidigital number, since it uses as much as digits as its factorization.

25126523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810564.

The product of its digits is 3600, while the sum is 26.

The square root of 25126523 is about 5012.6363323106. The cubic root of 25126523 is about 292.8942180081.

Adding to 25126523 its reverse (32562152), we get a palindrome (57688675).

The spelling of 25126523 in words is "twenty-five million, one hundred twenty-six thousand, five hundred twenty-three".