25140137 has 8 divisors (see below), whose sum is σ = 27693120. Its totient is φ = 22631760.

The previous prime is 25140133. The next prime is 25140139. The reversal of 25140137 is 73104152.

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

It is a cyclic number.

It is not a de Polignac number, because 25140137 - 2² = 25140133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25140133) 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, 9962 + ... + 12227.

It is an arithmetic number, because the mean of its divisors is an integer number (3461640).

Almost surely, 2^25140137 is an apocalyptic number.

It is an amenable number.

25140137 is a deficient number, since it is larger than the sum of its proper divisors (2552983).

25140137 is a wasteful number, since it uses less digits than its factorization.

25140137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22303.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 25140137 is about 5013.9941164704. The cubic root of 25140137 is about 292.9471069008.

Adding to 25140137 its reverse (73104152), we get a palindrome (98244289).

The spelling of 25140137 in words is "twenty-five million, one hundred forty thousand, one hundred thirty-seven".