25620423 has 4 divisors (see below), whose sum is σ = 34160568. Its totient is φ = 17080280.

The previous prime is 25620409. The next prime is 25620431. The reversal of 25620423 is 32402652.

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 25620423 - 2²⁰ = 24571847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25620393 and 25620402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620403) 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, 4270068 + ... + 4270073.

It is an arithmetic number, because the mean of its divisors is an integer number (8540142).

Almost surely, 2^25620423 is an apocalyptic number.

25620423 is a deficient number, since it is larger than the sum of its proper divisors (8540145).

25620423 is an equidigital number, since it uses as much as digits as its factorization.

25620423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8540144.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 25620423 is about 5061.6620788038. The cubic root of 25620423 is about 294.8008729915.

The spelling of 25620423 in words is "twenty-five million, six hundred twenty thousand, four hundred twenty-three".