25342381 has 2 divisors, whose sum is σ = 25342382. Its totient is φ = 25342380.

The previous prime is 25342379. The next prime is 25342423. The reversal of 25342381 is 18324352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25341156 + 1225 = 5034^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 25342381 - 2¹ = 25342379 is a prime.

It is a super-2 number, since 2×25342381² = 1284472549498322, which contains 22 as substring.

Together with 25342379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25312381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12671190 + 12671191.

It is an arithmetic number, because the mean of its divisors is an integer number (12671191).

Almost surely, 2^25342381 is an apocalyptic number.

It is an amenable number.

25342381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25342381 is an equidigital number, since it uses as much as digits as its factorization.

25342381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 25342381 is about 5034.1216711558. The cubic root of 25342381 is about 293.7305636152.

The spelling of 25342381 in words is "twenty-five million, three hundred forty-two thousand, three hundred eighty-one".