25264657 has 4 divisors (see below), whose sum is σ = 27561456. Its totient is φ = 22967860.

The previous prime is 25264627. The next prime is 25264663. The reversal of 25264657 is 75646252.

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 25264657 - 2¹⁹ = 24740369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25264627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1148383 + ... + 1148404.

It is an arithmetic number, because the mean of its divisors is an integer number (6890364).

Almost surely, 2^25264657 is an apocalyptic number.

It is an amenable number.

25264657 is a deficient number, since it is larger than the sum of its proper divisors (2296799).

25264657 is a wasteful number, since it uses less digits than its factorization.

25264657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296798.

The product of its digits is 100800, while the sum is 37.

The square root of 25264657 is about 5026.3960249865. The cubic root of 25264657 is about 293.4299697387.

It can be divided in two parts, 25264 and 657, that added together give a square (25921 = 161²).

The spelling of 25264657 in words is "twenty-five million, two hundred sixty-four thousand, six hundred fifty-seven".