25755442 has 8 divisors (see below), whose sum is σ = 40905756. Its totient is φ = 12120192.

The previous prime is 25755439. The next prime is 25755461. The reversal of 25755442 is 24455752.

It can be written as a sum of positive squares in 2 ways, for example, as 25715041 + 40401 = 5071^2 + 201^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 757513 = 25755442 / (2 + 5 + 7 + 5 + 5 + 4 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 25755398 and 25755407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378723 + ... + 378790.

Almost surely, 2^25755442 is an apocalyptic number.

25755442 is a deficient number, since it is larger than the sum of its proper divisors (15150314).

25755442 is a wasteful number, since it uses less digits than its factorization.

25755442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757532.

The product of its digits is 56000, while the sum is 34.

The square root of 25755442 is about 5074.9819704113. The cubic root of 25755442 is about 295.3178303882.

The spelling of 25755442 in words is "twenty-five million, seven hundred fifty-five thousand, four hundred forty-two".