25006457 has 4 divisors (see below), whose sum is σ = 28578816. Its totient is φ = 21434100.

The previous prime is 25006447. The next prime is 25006469. The reversal of 25006457 is 75460052.

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 25006457 - 2⁴ = 25006441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25006447) 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, 1786169 + ... + 1786182.

It is an arithmetic number, because the mean of its divisors is an integer number (7144704).

Almost surely, 2^25006457 is an apocalyptic number.

It is an amenable number.

25006457 is a deficient number, since it is larger than the sum of its proper divisors (3572359).

25006457 is an equidigital number, since it uses as much as digits as its factorization.

25006457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572358.

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

The square root of 25006457 is about 5000.6456583125. The cubic root of 25006457 is about 292.4269454977.

The spelling of 25006457 in words is "twenty-five million, six thousand, four hundred fifty-seven".