25530351 has 32 divisors (see below), whose sum is σ = 43008000. Its totient is φ = 13085280.

The previous prime is 25530343. The next prime is 25530359. The reversal of 25530351 is 15303552.

It is an interprime number because it is at equal distance from previous prime (25530343) and next prime (25530359).

It is not a de Polignac number, because 25530351 - 2³ = 25530343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17550 + ... + 18948.

It is an arithmetic number, because the mean of its divisors is an integer number (1344000).

Almost surely, 2^25530351 is an apocalyptic number.

25530351 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25530351 is a deficient number, since it is larger than the sum of its proper divisors (17477649).

25530351 is a wasteful number, since it uses less digits than its factorization.

25530351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 25530351 is about 5052.7567722977. The cubic root of 25530351 is about 294.4549968081.

The spelling of 25530351 in words is "twenty-five million, five hundred thirty thousand, three hundred fifty-one".