25247135 has 8 divisors (see below), whose sum is σ = 31115616. Its totient is φ = 19651680.

The previous prime is 25247129. The next prime is 25247137. The reversal of 25247135 is 53174252.

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 25247135 - 2²⁴ = 8469919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25247098 and 25247107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25247137) 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, 68051 + ... + 68420.

It is an arithmetic number, because the mean of its divisors is an integer number (3889452).

Almost surely, 2^25247135 is an apocalyptic number.

25247135 is a deficient number, since it is larger than the sum of its proper divisors (5868481).

25247135 is a wasteful number, since it uses less digits than its factorization.

25247135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136513.

The product of its digits is 8400, while the sum is 29.

The square root of 25247135 is about 5024.6527243184. The cubic root of 25247135 is about 293.3621191046.

The spelling of 25247135 in words is "twenty-five million, two hundred forty-seven thousand, one hundred thirty-five".