25740423 has 10 divisors (see below), whose sum is σ = 38451864. Its totient is φ = 17160228.

The previous prime is 25740413. The next prime is 25740433. The reversal of 25740423 is 32404752.

25740423 is a `hidden beast` number, since 257 + 404 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (25740413) and next prime (25740433).

It is not a de Polignac number, because 25740423 - 2⁵ = 25740391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25740413) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158811 + ... + 158972.

Almost surely, 2^25740423 is an apocalyptic number.

25740423 is a deficient number, since it is larger than the sum of its proper divisors (12711441).

25740423 is an equidigital number, since it uses as much as digits as its factorization.

25740423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317795 (or 317786 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 25740423 is about 5073.5020449390. The cubic root of 25740423 is about 295.2604154553.

The spelling of 25740423 in words is "twenty-five million, seven hundred forty thousand, four hundred twenty-three".