39425257 has 4 divisors (see below), whose sum is σ = 39490816. Its totient is φ = 39359700.

The previous prime is 39425233. The next prime is 39425263. The reversal of 39425257 is 75252493.

39425257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75252493 = 613 ⋅122761.

It is a cyclic number.

It is not a de Polignac number, because 39425257 - 2⁷ = 39425129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39425857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31869 + ... + 33082.

It is an arithmetic number, because the mean of its divisors is an integer number (9872704).

Almost surely, 2^39425257 is an apocalyptic number.

It is an amenable number.

39425257 is a deficient number, since it is larger than the sum of its proper divisors (65559).

39425257 is an equidigital number, since it uses as much as digits as its factorization.

39425257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65558.

The product of its digits is 75600, while the sum is 37.

The square root of 39425257 is about 6278.9534956074. The cubic root of 39425257 is about 340.3492863794.

It can be divided in two parts, 394 and 25257, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 39425257 in words is "thirty-nine million, four hundred twenty-five thousand, two hundred fifty-seven".