25542501 has 8 divisors (see below), whose sum is σ = 34302240. Its totient is φ = 16905552.

The previous prime is 25542499. The next prime is 25542509. The reversal of 25542501 is 10524552.

It is a happy number.

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

It is not a de Polignac number, because 25542501 - 2¹ = 25542499 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25542509) 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, 30210 + ... + 31043.

It is an arithmetic number, because the mean of its divisors is an integer number (4287780).

Almost surely, 2^25542501 is an apocalyptic number.

It is an amenable number.

25542501 is a deficient number, since it is larger than the sum of its proper divisors (8759739).

25542501 is a wasteful number, since it uses less digits than its factorization.

25542501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61395.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25542501 is about 5053.9589432444. The cubic root of 25542501 is about 294.5017001851.

The spelling of 25542501 in words is "twenty-five million, five hundred forty-two thousand, five hundred one".