25256437 has 8 divisors (see below), whose sum is σ = 26395776. Its totient is φ = 24142272.

The previous prime is 25256431. The next prime is 25256447. The reversal of 25256437 is 73465252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25256437 - 2¹⁵ = 25223669 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 (25256431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4228 + ... + 8269.

It is an arithmetic number, because the mean of its divisors is an integer number (3299472).

Almost surely, 2^25256437 is an apocalyptic number.

It is an amenable number.

25256437 is a deficient number, since it is larger than the sum of its proper divisors (1139339).

25256437 is a wasteful number, since it uses less digits than its factorization.

25256437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12587.

The product of its digits is 50400, while the sum is 34.

The square root of 25256437 is about 5025.5782751839. The cubic root of 25256437 is about 293.3981432497.

The spelling of 25256437 in words is "twenty-five million, two hundred fifty-six thousand, four hundred thirty-seven".