25415623 has 4 divisors (see below), whose sum is σ = 26006728. Its totient is φ = 24824520.

The previous prime is 25415587. The next prime is 25415627. The reversal of 25415623 is 32651452.

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 25415623 - 2⁹ = 25415111 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 25415591 and 25415600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25415627) 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, 295488 + ... + 295573.

It is an arithmetic number, because the mean of its divisors is an integer number (6501682).

Almost surely, 2^25415623 is an apocalyptic number.

25415623 is a deficient number, since it is larger than the sum of its proper divisors (591105).

25415623 is an equidigital number, since it uses as much as digits as its factorization.

25415623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591104.

The product of its digits is 7200, while the sum is 28.

The square root of 25415623 is about 5041.3909786883. The cubic root of 25415623 is about 294.0132616228.

The spelling of 25415623 in words is "twenty-five million, four hundred fifteen thousand, six hundred twenty-three".