25742775 has 12 divisors (see below), whose sum is σ = 42561512. Its totient is φ = 13729440.

The previous prime is 25742771. The next prime is 25742797. The reversal of 25742775 is 57724752.

It is not a de Polignac number, because 25742775 - 2² = 25742771 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25742771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171544 + ... + 171693.

Almost surely, 2^25742775 is an apocalyptic number.

25742775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25742775 is a deficient number, since it is larger than the sum of its proper divisors (16818737).

25742775 is a wasteful number, since it uses less digits than its factorization.

25742775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343250 (or 343245 counting only the distinct ones).

The product of its digits is 137200, while the sum is 39.

The square root of 25742775 is about 5073.7338321989. The cubic root of 25742775 is about 295.2694082025.

The spelling of 25742775 in words is "twenty-five million, seven hundred forty-two thousand, seven hundred seventy-five".