25397007 has 4 divisors (see below), whose sum is σ = 33862680. Its totient is φ = 16931336.

The previous prime is 25397003. The next prime is 25397027. The reversal of 25397007 is 70079352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25397007 - 2² = 25397003 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25397003) 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, 4232832 + ... + 4232837.

It is an arithmetic number, because the mean of its divisors is an integer number (8465670).

Almost surely, 2^25397007 is an apocalyptic number.

25397007 is a deficient number, since it is larger than the sum of its proper divisors (8465673).

25397007 is an equidigital number, since it uses as much as digits as its factorization.

25397007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8465672.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 25397007 is about 5039.5443246389. The cubic root of 25397007 is about 293.9414594906.

The spelling of 25397007 in words is "twenty-five million, three hundred ninety-seven thousand, seven".