25530751 has 4 divisors (see below), whose sum is σ = 25547400. Its totient is φ = 25514104.

The previous prime is 25530749. The next prime is 25530761. The reversal of 25530751 is 15703552.

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 25530751 - 2¹ = 25530749 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 (25530761) 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, 5761 + ... + 9178.

It is an arithmetic number, because the mean of its divisors is an integer number (6386850).

Almost surely, 2^25530751 is an apocalyptic number.

25530751 is a deficient number, since it is larger than the sum of its proper divisors (16649).

25530751 is a wasteful number, since it uses less digits than its factorization.

25530751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16648.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 25530751 is about 5052.7963544952. The cubic root of 25530751 is about 294.4565346037.

The spelling of 25530751 in words is "twenty-five million, five hundred thirty thousand, seven hundred fifty-one".