25042557 has 8 divisors (see below), whose sum is σ = 33417376. Its totient is φ = 16681392.

The previous prime is 25042543. The next prime is 25042571. The reversal of 25042557 is 75524052.

It is an interprime number because it is at equal distance from previous prime (25042543) and next prime (25042571).

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

It is not a de Polignac number, because 25042557 - 2⁴ = 25042541 is a prime.

It is a super-3 number, since 3×25042557³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2178 + ... + 7404.

It is an arithmetic number, because the mean of its divisors is an integer number (4177172).

Almost surely, 2^25042557 is an apocalyptic number.

It is an amenable number.

25042557 is a deficient number, since it is larger than the sum of its proper divisors (8374819).

25042557 is a wasteful number, since it uses less digits than its factorization.

25042557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 25042557 is about 5004.2538904416. The cubic root of 25042557 is about 292.5675963286.

The spelling of 25042557 in words is "twenty-five million, forty-two thousand, five hundred fifty-seven".