25142723 has 4 divisors (see below), whose sum is σ = 25617168. Its totient is φ = 24668280.

The previous prime is 25142693. The next prime is 25142731. The reversal of 25142723 is 32724152.

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 25142723 - 2¹² = 25138627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25142692 and 25142701.

It is not an unprimeable number, because it can be changed into a prime (25142783) 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, 237143 + ... + 237248.

It is an arithmetic number, because the mean of its divisors is an integer number (6404292).

Almost surely, 2^25142723 is an apocalyptic number.

25142723 is a deficient number, since it is larger than the sum of its proper divisors (474445).

25142723 is an equidigital number, since it uses as much as digits as its factorization.

25142723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474444.

The product of its digits is 3360, while the sum is 26.

The square root of 25142723 is about 5014.2519880836. The cubic root of 25142723 is about 292.9571510684.

Adding to 25142723 its reverse (32724152), we get a palindrome (57866875).

The spelling of 25142723 in words is "twenty-five million, one hundred forty-two thousand, seven hundred twenty-three".