25151047 has 4 divisors (see below), whose sum is σ = 25161856. Its totient is φ = 25140240.

The previous prime is 25150997. The next prime is 25151053. The reversal of 25151047 is 74015152.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25151047 - 2¹⁵ = 25118279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25151747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318 + ... + 7099.

It is an arithmetic number, because the mean of its divisors is an integer number (6290464).

Almost surely, 2^25151047 is an apocalyptic number.

25151047 is a deficient number, since it is larger than the sum of its proper divisors (10809).

25151047 is an equidigital number, since it uses as much as digits as its factorization.

25151047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10808.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 25151047 is about 5015.0819534680. The cubic root of 25151047 is about 292.9894772708.

Adding to 25151047 its reverse (74015152), we get a palindrome (99166199).

The spelling of 25151047 in words is "twenty-five million, one hundred fifty-one thousand, forty-seven".