25012657 has 4 divisors (see below), whose sum is σ = 25055856. Its totient is φ = 24969460.

The previous prime is 25012651. The next prime is 25012679. The reversal of 25012657 is 75621052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25012657 - 2¹⁹ = 24488369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25012651) 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, 20719 + ... + 21892.

It is an arithmetic number, because the mean of its divisors is an integer number (6263964).

Almost surely, 2^25012657 is an apocalyptic number.

It is an amenable number.

25012657 is a deficient number, since it is larger than the sum of its proper divisors (43199).

25012657 is an equidigital number, since it uses as much as digits as its factorization.

25012657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43198.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 25012657 is about 5001.2655398409. The cubic root of 25012657 is about 292.4511112194.

The spelling of 25012657 in words is "twenty-five million, twelve thousand, six hundred fifty-seven".