25740039 has 8 divisors (see below), whose sum is σ = 36960112. Its totient is φ = 15840000.

The previous prime is 25740031. The next prime is 25740047. The reversal of 25740039 is 93004752.

It is an interprime number because it is at equal distance from previous prime (25740031) and next prime (25740047).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25740039 - 2³ = 25740031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25739988 and 25740015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25740031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329962 + ... + 330039.

It is an arithmetic number, because the mean of its divisors is an integer number (4620014).

Almost surely, 2^25740039 is an apocalyptic number.

25740039 is a deficient number, since it is larger than the sum of its proper divisors (11220073).

25740039 is a wasteful number, since it uses less digits than its factorization.

25740039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660017.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 25740039 is about 5073.4642011154. The cubic root of 25740039 is about 295.2589471997.

The spelling of 25740039 in words is "twenty-five million, seven hundred forty thousand, thirty-nine".